256252342 has 4 divisors (see below), whose sum is σ = 384378516. Its totient is φ = 128126170.

The previous prime is 256252333. The next prime is 256252349. The reversal of 256252342 is 243252652.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256252349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64063084 + ... + 64063087.

It is an arithmetic number, because the mean of its divisors is an integer number (96094629).

Almost surely, 2^256252342 is an apocalyptic number.

256252342 is a deficient number, since it is larger than the sum of its proper divisors (128126174).

256252342 is a wasteful number, since it uses less digits than its factorization.

256252342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128126173.

The product of its digits is 28800, while the sum is 31.

The square root of 256252342 is about 16007.8837452050. The cubic root of 256252342 is about 635.1689814193.

The spelling of 256252342 in words is "two hundred fifty-six million, two hundred fifty-two thousand, three hundred forty-two".