122920493 has 4 divisors (see below), whose sum is σ = 123734688. Its totient is φ = 122106300.

The previous prime is 122920417. The next prime is 122920507. The reversal of 122920493 is 394029221.

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 a de Polignac number, because none of the positive numbers 2^k-122920493 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 (122220493) 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, 406871 + ... + 407172.

It is an arithmetic number, because the mean of its divisors is an integer number (30933672).

Almost surely, 2^122920493 is an apocalyptic number.

It is an amenable number.

122920493 is a deficient number, since it is larger than the sum of its proper divisors (814195).

122920493 is an equidigital number, since it uses as much as digits as its factorization.

122920493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814194.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 122920493 is about 11086.9514745939. The cubic root of 122920493 is about 497.2118048361.

The spelling of 122920493 in words is "one hundred twenty-two million, nine hundred twenty thousand, four hundred ninety-three".