257067242 has 4 divisors (see below), whose sum is σ = 385600866. Its totient is φ = 128533620.

The previous prime is 257067233. The next prime is 257067259. The reversal of 257067242 is 242760752.

257067242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 252778201 + 4289041 = 15899^2 + 2071^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64266809 + ... + 64266812.

Almost surely, 2^257067242 is an apocalyptic number.

257067242 is a deficient number, since it is larger than the sum of its proper divisors (128533624).

257067242 is a wasteful number, since it uses less digits than its factorization.

257067242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128533623.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 257067242 is about 16033.3166250779. The cubic root of 257067242 is about 635.8415625936.

The spelling of 257067242 in words is "two hundred fifty-seven million, sixty-seven thousand, two hundred forty-two".