122158464 has 64 divisors (see below), whose sum is σ = 343589040. Its totient is φ = 38322176.

The previous prime is 122158459. The next prime is 122158483. The reversal of 122158464 is 464851221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2829 + ... + 15884.

Almost surely, 2^122158464 is an apocalyptic number.

It is an amenable number.

122158464 is an abundant number, since it is smaller than the sum of its proper divisors (221430576).

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

122158464 is a wasteful number, since it uses less digits than its factorization.

122158464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747 (or 18735 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 122158464 is about 11052.5320175967. The cubic root of 122158464 is about 496.1822084640.

It can be divided in two parts, 1221 and 58464, that added together give a triangular number (59685 = T₃₄₅).

The spelling of 122158464 in words is "one hundred twenty-two million, one hundred fifty-eight thousand, four hundred sixty-four".