122157436 has 6 divisors (see below), whose sum is σ = 213775520. Its totient is φ = 61078716.

The previous prime is 122157419. The next prime is 122157493. The reversal of 122157436 is 634751221.

It is a junction number, because it is equal to n+sod(n) for n = 122157398 and 122157407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15269676 + ... + 15269683.

Almost surely, 2^122157436 is an apocalyptic number.

It is an amenable number.

122157436 is a deficient number, since it is larger than the sum of its proper divisors (91618084).

122157436 is a wasteful number, since it uses less digits than its factorization.

122157436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30539363 (or 30539361 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 122157436 is about 11052.4855123180. The cubic root of 122157436 is about 496.1808166196.

The spelling of 122157436 in words is "one hundred twenty-two million, one hundred fifty-seven thousand, four hundred thirty-six".