256133842 has 32 divisors (see below), whose sum is σ = 421770240. Its totient is φ = 116276160.

The previous prime is 256133837. The next prime is 256133893. The reversal of 256133842 is 248331652.

It is a junction number, because it is equal to n+sod(n) for n = 256133798 and 256133807.

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 in 15 ways as a sum of consecutive naturals, for example, 73884 + ... + 77272.

It is an arithmetic number, because the mean of its divisors is an integer number (13180320).

Almost surely, 2^256133842 is an apocalyptic number.

256133842 is a deficient number, since it is larger than the sum of its proper divisors (165636398).

256133842 is a wasteful number, since it uses less digits than its factorization.

256133842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498.

The product of its digits is 34560, while the sum is 34.

The square root of 256133842 is about 16004.1820159607. The cubic root of 256133842 is about 635.0710582436.

The spelling of 256133842 in words is "two hundred fifty-six million, one hundred thirty-three thousand, eight hundred forty-two".