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120246140 = 22571276763
BaseRepresentation
bin1110010101011…
…00111101111100
322101021010200202
413022230331330
5221240334030
615533143032
72660034560
oct712547574
9271233622
10120246140
116196a783
123432aa78
131bbb1c81
1411d816a0
15a853745
hex72acf7c

120246140 has 48 divisors (see below), whose sum is σ = 290906112. Its totient is φ = 40896576.

The previous prime is 120246127. The next prime is 120246187. The reversal of 120246140 is 41642021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14399 + ... + 21161.

It is an arithmetic number, because the mean of its divisors is an integer number (6060544).

Almost surely, 2120246140 is an apocalyptic number.

120246140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120246140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145453056).

120246140 is an abundant number, since it is smaller than the sum of its proper divisors (170659972).

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

120246140 is a wasteful number, since it uses less digits than its factorization.

120246140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906 (or 6904 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 120246140 is about 10965.6800974677. The cubic root of 120246140 is about 493.5794253494.

Adding to 120246140 its reverse (41642021), we get a palindrome (161888161).

The spelling of 120246140 in words is "one hundred twenty million, two hundred forty-six thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 127 140 254 508 635 889 1270 1778 2540 3556 4445 6763 8890 13526 17780 27052 33815 47341 67630 94682 135260 189364 236705 473410 858901 946820 1717802 3435604 4294505 6012307 8589010 12024614 17178020 24049228 30061535 60123070 120246140