257135475342 has 16 divisors (see below), whose sum is σ = 514275990480. Its totient is φ = 85710985152.

The previous prime is 257135475287. The next prime is 257135475403. The reversal of 257135475342 is 243574531752.

It is a super-2 number, since 2×257135475342² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257135475291 and 257135475300.

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, 926034 + ... + 1171242.

It is an arithmetic number, because the mean of its divisors is an integer number (32142249405).

Almost surely, 2^257135475342 is an apocalyptic number.

257135475342 is an abundant number, since it is smaller than the sum of its proper divisors (257140515138).

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

257135475342 is a wasteful number, since it uses less digits than its factorization.

257135475342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419987.

The product of its digits is 3528000, while the sum is 48.

It can be divided in two parts, 25713 and 5475342, that added together give a palindrome (5501055).

The spelling of 257135475342 in words is "two hundred fifty-seven billion, one hundred thirty-five million, four hundred seventy-five thousand, three hundred forty-two".