123621154252 has 48 divisors (see below), whose sum is σ = 222277686400. Its totient is φ = 60125587200.

The previous prime is 123621154247. The next prime is 123621154271. The reversal of 123621154252 is 252451126321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78289999 + ... + 78291577.

Almost surely, 2^123621154252 is an apocalyptic number.

It is an amenable number.

123621154252 is a deficient number, since it is larger than the sum of its proper divisors (98656532148).

123621154252 is a wasteful number, since it uses less digits than its factorization.

123621154252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206 (or 3204 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The spelling of 123621154252 in words is "one hundred twenty-three billion, six hundred twenty-one million, one hundred fifty-four thousand, two hundred fifty-two".