122878156 has 12 divisors (see below), whose sum is σ = 218562400. Its totient is φ = 60431760.

The previous prime is 122878139. The next prime is 122878183. The reversal of 122878156 is 651878221.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251556 + ... + 252043.

Almost surely, 2^122878156 is an apocalyptic number.

It is an amenable number.

122878156 is a deficient number, since it is larger than the sum of its proper divisors (95684244).

122878156 is a wasteful number, since it uses less digits than its factorization.

122878156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503664 (or 503662 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 122878156 is about 11085.0419936056. The cubic root of 122878156 is about 497.1547140753.

The spelling of 122878156 in words is "one hundred twenty-two million, eight hundred seventy-eight thousand, one hundred fifty-six".