257341442 has 4 divisors (see below), whose sum is σ = 386012166. Its totient is φ = 128670720.

The previous prime is 257341429. The next prime is 257341451. The reversal of 257341442 is 244143752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243953161 + 13388281 = 15619^2 + 3659^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257341399 and 257341408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64335359 + ... + 64335362.

Almost surely, 2^257341442 is an apocalyptic number.

257341442 is a deficient number, since it is larger than the sum of its proper divisors (128670724).

257341442 is a wasteful number, since it uses less digits than its factorization.

257341442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128670723.

The product of its digits is 26880, while the sum is 32.

The square root of 257341442 is about 16041.8652905452. The cubic root of 257341442 is about 636.0675550909.

The spelling of 257341442 in words is "two hundred fifty-seven million, three hundred forty-one thousand, four hundred forty-two".