257473142 has 24 divisors (see below), whose sum is σ = 410660040. Its totient is φ = 121070736.

The previous prime is 257473129. The next prime is 257473163. The reversal of 257473142 is 241374752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879298 + ... + 1879434.

It is an arithmetic number, because the mean of its divisors is an integer number (17110835).

Almost surely, 2^257473142 is an apocalyptic number.

257473142 is a deficient number, since it is larger than the sum of its proper divisors (153186898).

257473142 is an frugal number, since it uses more digits than its factorization.

257473142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 158 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 257473142 is about 16045.9696497282. The cubic root of 257473142 is about 636.1760436552.

The spelling of 257473142 in words is "two hundred fifty-seven million, four hundred seventy-three thousand, one hundred forty-two".