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123130030 = 2512313003
BaseRepresentation
bin1110101011011…
…01000010101110
322120200122122111
413111231002232
5223010130110
620115034234
73023405452
oct725550256
9276618574
10123130030
116355a461
123529b97a
131c68180a
14124d2662
15ac22e8a
hex756d0ae

123130030 has 8 divisors (see below), whose sum is σ = 221634072. Its totient is φ = 49252008.

The previous prime is 123130003. The next prime is 123130039. The reversal of 123130030 is 30031321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1231300302 = 30322008575601800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6156492 + ... + 6156511.

It is an arithmetic number, because the mean of its divisors is an integer number (27704259).

Almost surely, 2123130030 is an apocalyptic number.

123130030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123130030 is a deficient number, since it is larger than the sum of its proper divisors (98504042).

123130030 is a wasteful number, since it uses less digits than its factorization.

123130030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12313010.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 123130030 is about 11096.3971630435. The cubic root of 123130030 is about 497.4941692708.

Adding to 123130030 its reverse (30031321), we get a palindrome (153161351).

The spelling of 123130030 in words is "one hundred twenty-three million, one hundred thirty thousand, thirty".

Divisors: 1 2 5 10 12313003 24626006 61565015 123130030