122765997 has 4 divisors (see below), whose sum is σ = 163688000. Its totient is φ = 81843996.

The previous prime is 122765971. The next prime is 122765999. The reversal of 122765997 is 799567221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122765997 - 2¹⁵ = 122733229 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 (122765999) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 20460997 + ... + 20461002.

It is an arithmetic number, because the mean of its divisors is an integer number (40922000).

Almost surely, 2^122765997 is an apocalyptic number.

It is an amenable number.

122765997 is a deficient number, since it is larger than the sum of its proper divisors (40922003).

122765997 is an equidigital number, since it uses as much as digits as its factorization.

122765997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40922002.

The product of its digits is 476280, while the sum is 48.

The square root of 122765997 is about 11079.9818140645. The cubic root of 122765997 is about 497.0034060604.

The spelling of 122765997 in words is "one hundred twenty-two million, seven hundred sixty-five thousand, nine hundred ninety-seven".