123642960 has 80 divisors (see below), whose sum is σ = 438055296. Its totient is φ = 28260864.

The previous prime is 123642923. The next prime is 123643001. The reversal of 123642960 is 69246321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35119 + ... + 38478.

Almost surely, 2^123642960 is an apocalyptic number.

123642960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123642960 is an abundant number, since it is smaller than the sum of its proper divisors (314412336).

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

123642960 is a wasteful number, since it uses less digits than its factorization.

123642960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73620 (or 73614 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 123642960 is about 11119.4855996130. The cubic root of 123642960 is about 498.1840257936.

The spelling of 123642960 in words is "one hundred twenty-three million, six hundred forty-two thousand, nine hundred sixty".