256342342 has 8 divisors (see below), whose sum is σ = 384680232. Its totient is φ = 128115600.

The previous prime is 256342321. The next prime is 256342349. The reversal of 256342342 is 243243652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×256342342² = 131422792604089928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256342349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21759 + ... + 31402.

It is an arithmetic number, because the mean of its divisors is an integer number (48085029).

Almost surely, 2^256342342 is an apocalyptic number.

256342342 is a deficient number, since it is larger than the sum of its proper divisors (128337890).

256342342 is a wasteful number, since it uses less digits than its factorization.

256342342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55574.

The product of its digits is 34560, while the sum is 31.

The square root of 256342342 is about 16010.6946132890. The cubic root of 256342342 is about 635.2433332825.

Adding to 256342342 its reverse (243243652), we get a palindrome (499585994).

The spelling of 256342342 in words is "two hundred fifty-six million, three hundred forty-two thousand, three hundred forty-two".