122997879 has 16 divisors (see below), whose sum is σ = 187145440. Its totient is φ = 79781760.

The previous prime is 122997877. The next prime is 122997893. The reversal of 122997879 is 978799221.

It is not a de Polignac number, because 122997879 - 2¹ = 122997877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122997871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60562 + ... + 62559.

It is an arithmetic number, because the mean of its divisors is an integer number (11696590).

Almost surely, 2^122997879 is an apocalyptic number.

122997879 is a deficient number, since it is larger than the sum of its proper divisors (64147561).

122997879 is a wasteful number, since it uses less digits than its factorization.

122997879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123167 (or 123161 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 122997879 is about 11090.4408839324. The cubic root of 122997879 is about 497.3161247371.

It can be divided in two parts, 122 and 997879, that added together give a square (998001 = 999²).

The spelling of 122997879 in words is "one hundred twenty-two million, nine hundred ninety-seven thousand, eight hundred seventy-nine".