257792123 has 2 divisors, whose sum is σ = 257792124. Its totient is φ = 257792122.

The previous prime is 257792069. The next prime is 257792141. The reversal of 257792123 is 321297752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257792123 - 2²⁰ = 256743547 is a prime.

It is not a weakly prime, because it can be changed into another prime (257791123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128896061 + 128896062.

It is an arithmetic number, because the mean of its divisors is an integer number (128896062).

Almost surely, 2^257792123 is an apocalyptic number.

257792123 is a deficient number, since it is larger than the sum of its proper divisors (1).

257792123 is an equidigital number, since it uses as much as digits as its factorization.

257792123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 257792123 is about 16055.9061718733. The cubic root of 257792123 is about 636.4386526983.

The spelling of 257792123 in words is "two hundred fifty-seven million, seven hundred ninety-two thousand, one hundred twenty-three".