257519142 has 16 divisors (see below), whose sum is σ = 572264880. Its totient is φ = 85839696.

The previous prime is 257519117. The next prime is 257519153. The reversal of 257519142 is 241915752.

It is a super-2 number, since 2×257519142² = 132632216992832328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257519097 and 257519106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2384383 + ... + 2384490.

It is an arithmetic number, because the mean of its divisors is an integer number (35766555).

Almost surely, 2^257519142 is an apocalyptic number.

257519142 is an abundant number, since it is smaller than the sum of its proper divisors (314745738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257519142 is a wasteful number, since it uses less digits than its factorization.

257519142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768884 (or 4768878 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 257519142 is about 16047.4029674586. The cubic root of 257519142 is about 636.2139276783.

The spelling of 257519142 in words is "two hundred fifty-seven million, five hundred nineteen thousand, one hundred forty-two".