257142394118 has 8 divisors (see below), whose sum is σ = 385749905040. Its totient is φ = 128559092440.

The previous prime is 257142394057. The next prime is 257142394141. The reversal of 257142394118 is 811493241752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×257142394118² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6025733 + ... + 6068256.

It is an arithmetic number, because the mean of its divisors is an integer number (48218738130).

Almost surely, 2^257142394118 is an apocalyptic number.

257142394118 is a deficient number, since it is larger than the sum of its proper divisors (128607510922).

257142394118 is a wasteful number, since it uses less digits than its factorization.

257142394118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12104622.

The product of its digits is 483840, while the sum is 47.

The spelling of 257142394118 in words is "two hundred fifty-seven billion, one hundred forty-two million, three hundred ninety-four thousand, one hundred eighteen".