122918137 has 4 divisors (see below), whose sum is σ = 123672400. Its totient is φ = 122163876.

The previous prime is 122918119. The next prime is 122918161. The reversal of 122918137 is 731819221.

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 a cyclic number.

It is not a de Polignac number, because 122918137 - 2⁷ = 122918009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122918197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376887 + ... + 377212.

It is an arithmetic number, because the mean of its divisors is an integer number (30918100).

Almost surely, 2^122918137 is an apocalyptic number.

It is an amenable number.

122918137 is a deficient number, since it is larger than the sum of its proper divisors (754263).

122918137 is an equidigital number, since it uses as much as digits as its factorization.

122918137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754262.

The product of its digits is 6048, while the sum is 34.

The square root of 122918137 is about 11086.8452230560. The cubic root of 122918137 is about 497.2086281527.

The spelling of 122918137 in words is "one hundred twenty-two million, nine hundred eighteen thousand, one hundred thirty-seven".