256455342 has 64 divisors (see below), whose sum is σ = 669553920. Its totient is φ = 71733600.

The previous prime is 256455317. The next prime is 256455349. The reversal of 256455342 is 243554652.

256455342 is a `hidden beast` number, since 2 + 5 + 64 + 553 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 256455297 and 256455306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256455349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8884 + ... + 24327.

It is an arithmetic number, because the mean of its divisors is an integer number (10461780).

Almost surely, 2^256455342 is an apocalyptic number.

256455342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256455342 is an abundant number, since it is smaller than the sum of its proper divisors (413098578).

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

256455342 is a wasteful number, since it uses less digits than its factorization.

256455342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33246 (or 33240 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 256455342 is about 16014.2231157181. The cubic root of 256455342 is about 635.3366615391.

The spelling of 256455342 in words is "two hundred fifty-six million, four hundred fifty-five thousand, three hundred forty-two".