122918957 has 4 divisors (see below), whose sum is σ = 140478816. Its totient is φ = 105359100.

The previous prime is 122918953. The next prime is 122918977. The reversal of 122918957 is 759819221.

It is a happy number.

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 122918957 - 2² = 122918953 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 (122918953) 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, 8779919 + ... + 8779932.

It is an arithmetic number, because the mean of its divisors is an integer number (35119704).

Almost surely, 2^122918957 is an apocalyptic number.

It is an amenable number.

122918957 is a deficient number, since it is larger than the sum of its proper divisors (17559859).

122918957 is an equidigital number, since it uses as much as digits as its factorization.

122918957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17559858.

The product of its digits is 90720, while the sum is 44.

The square root of 122918957 is about 11086.8822037577. The cubic root of 122918957 is about 497.2097337941.

The spelling of 122918957 in words is "one hundred twenty-two million, nine hundred eighteen thousand, nine hundred fifty-seven".