123556260 has 24 divisors (see below), whose sum is σ = 345957696. Its totient is φ = 32948320.

The previous prime is 123556231. The next prime is 123556267. The reversal of 123556260 is 62655321.

It is a super-2 number, since 2×123556260² = 30532298770375200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (123556267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029576 + ... + 1029695.

It is an arithmetic number, because the mean of its divisors is an integer number (14414904).

Almost surely, 2^123556260 is an apocalyptic number.

123556260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123556260 is an abundant number, since it is smaller than the sum of its proper divisors (222401436).

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

123556260 is a wasteful number, since it uses less digits than its factorization.

123556260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059283 (or 2059281 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 123556260 is about 11115.5863543045. The cubic root of 123556260 is about 498.0675542622.

Adding to 123556260 its product of nonzero digits (10800), we get a triangular number (123567060 = T₁₅₇₂₀).

The spelling of 123556260 in words is "one hundred twenty-three million, five hundred fifty-six thousand, two hundred sixty".