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120123030 = 23541611601
BaseRepresentation
bin1110010100011…
…10111010010110
322101000212211010
413022032322112
5221222414110
615530353050
72656012626
oct712167226
9271025733
10120123030
1161896235
123428b786
131bb6ac21
1411d4c886
15a82c020
hex728ee96

120123030 has 64 divisors (see below), whose sum is σ = 300355776. Its totient is φ = 30720000.

The previous prime is 120123019. The next prime is 120123041. The reversal of 120123030 is 30321021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120123019) and next prime (120123041).

It is a junction number, because it is equal to n+sod(n) for n = 120122997 and 120123015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74230 + ... + 75830.

It is an arithmetic number, because the mean of its divisors is an integer number (4693059).

Almost surely, 2120123030 is an apocalyptic number.

120123030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120123030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150177888).

120123030 is an abundant number, since it is smaller than the sum of its proper divisors (180232746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120123030 is a wasteful number, since it uses less digits than its factorization.

120123030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 120123030 is about 10960.0652370321. The cubic root of 120123030 is about 493.4109228869.

Adding to 120123030 its reverse (30321021), we get a palindrome (150444051).

The spelling of 120123030 in words is "one hundred twenty million, one hundred twenty-three thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 41 61 82 122 123 183 205 246 305 366 410 610 615 915 1230 1601 1830 2501 3202 4803 5002 7503 8005 9606 12505 15006 16010 24015 25010 37515 48030 65641 75030 97661 131282 195322 196923 292983 328205 393846 488305 585966 656410 976610 984615 1464915 1969230 2929830 4004101 8008202 12012303 20020505 24024606 40041010 60061515 120123030