122778254 has 12 divisors (see below), whose sum is σ = 185908464. Its totient is φ = 60814152.

The previous prime is 122778223. The next prime is 122778281. The reversal of 122778254 is 452877221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21179 + ... + 26345.

It is an arithmetic number, because the mean of its divisors is an integer number (15492372).

Almost surely, 2^122778254 is an apocalyptic number.

122778254 is a deficient number, since it is larger than the sum of its proper divisors (63130210).

122778254 is an equidigital number, since it uses as much as digits as its factorization.

122778254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387 (or 5278 counting only the distinct ones).

The product of its digits is 62720, while the sum is 38.

The square root of 122778254 is about 11080.5349148857. The cubic root of 122778254 is about 497.0199458411.

The spelling of 122778254 in words is "one hundred twenty-two million, seven hundred seventy-eight thousand, two hundred fifty-four".