256122435 has 16 divisors (see below), whose sum is σ = 410985216. Its totient is φ = 136202208.

The previous prime is 256122431. The next prime is 256122439. The reversal of 256122435 is 534221652.

It is an interprime number because it is at equal distance from previous prime (256122431) and next prime (256122439).

It is not a de Polignac number, because 256122435 - 2² = 256122431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256122431) by changing a digit.

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, 19399 + ... + 29808.

It is an arithmetic number, because the mean of its divisors is an integer number (25686576).

Almost surely, 2^256122435 is an apocalyptic number.

256122435 is a deficient number, since it is larger than the sum of its proper divisors (154862781).

256122435 is a wasteful number, since it uses less digits than its factorization.

256122435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49562.

The product of its digits is 14400, while the sum is 30.

The square root of 256122435 is about 16003.8256363908. The cubic root of 256122435 is about 635.0616304082.

The spelling of 256122435 in words is "two hundred fifty-six million, one hundred twenty-two thousand, four hundred thirty-five".