257175142 has 16 divisors (see below), whose sum is σ = 444994560. Its totient is φ = 109187208.

The previous prime is 257175137. The next prime is 257175143. The reversal of 257175142 is 241571752.

It is a super-2 number, since 2×257175142² = 132278107325440328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257175098 and 257175107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257175143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84342 + ... + 87337.

It is an arithmetic number, because the mean of its divisors is an integer number (27812160).

Almost surely, 2^257175142 is an apocalyptic number.

257175142 is a deficient number, since it is larger than the sum of its proper divisors (187819418).

257175142 is a wasteful number, since it uses less digits than its factorization.

257175142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171795.

The product of its digits is 19600, while the sum is 34.

The square root of 257175142 is about 16036.6811404355. The cubic root of 257175142 is about 635.9305117045.

The spelling of 257175142 in words is "two hundred fifty-seven million, one hundred seventy-five thousand, one hundred forty-two".