257473942 has 16 divisors (see below), whose sum is σ = 446105232. Its totient is φ = 110149120.

The previous prime is 257473913. The next prime is 257473949. The reversal of 257473942 is 249374752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257473949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 343843 + ... + 344590.

It is an arithmetic number, because the mean of its divisors is an integer number (27881577).

Almost surely, 2^257473942 is an apocalyptic number.

257473942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

257473942 is a deficient number, since it is larger than the sum of its proper divisors (188631290).

257473942 is a wasteful number, since it uses less digits than its factorization.

257473942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688463.

The product of its digits is 423360, while the sum is 43.

The square root of 257473942 is about 16045.9945780871. The cubic root of 257473942 is about 636.1767025463.

The spelling of 257473942 in words is "two hundred fifty-seven million, four hundred seventy-three thousand, nine hundred forty-two".