122921744 has 20 divisors (see below), whose sum is σ = 259812240. Its totient is φ = 55873440.

The previous prime is 122921717. The next prime is 122921753. The reversal of 122921744 is 447129221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 122921744.

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, 349034 + ... + 349385.

It is an arithmetic number, because the mean of its divisors is an integer number (12990612).

Almost surely, 2^122921744 is an apocalyptic number.

It is an amenable number.

122921744 is an abundant number, since it is smaller than the sum of its proper divisors (136890496).

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

122921744 is a wasteful number, since it uses less digits than its factorization.

122921744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698438 (or 698432 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 122921744 is about 11087.0078921231. The cubic root of 122921744 is about 497.2134915900.

The spelling of 122921744 in words is "one hundred twenty-two million, nine hundred twenty-one thousand, seven hundred forty-four".