122872 has 8 divisors (see below), whose sum is σ = 230400. Its totient is φ = 61432.

The previous prime is 122869. The next prime is 122887. The reversal of 122872 is 278221.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 7672 + ... + 7687.

It is an arithmetic number, because the mean of its divisors is an integer number (28800).

2¹²²⁸⁷² is an apocalyptic number.

It is an amenable number.

122872 is a deficient number, since it is larger than the sum of its proper divisors (107528).

122872 is a wasteful number, since it uses less digits than its factorization.

122872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15365 (or 15361 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 122872 is about 350.5310257310. The cubic root of 122872 is about 49.7146411717.

The spelling of 122872 in words is "one hundred twenty-two thousand, eight hundred seventy-two".