256124741 has 4 divisors (see below), whose sum is σ = 257412000. Its totient is φ = 254837484.

The previous prime is 256124699. The next prime is 256124773. The reversal of 256124741 is 147421652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256124741 - 2¹⁴ = 256108357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256124698 and 256124707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256124441) 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 3 ways as a sum of consecutive naturals, for example, 643331 + ... + 643728.

It is an arithmetic number, because the mean of its divisors is an integer number (64353000).

Almost surely, 2^256124741 is an apocalyptic number.

It is an amenable number.

256124741 is a deficient number, since it is larger than the sum of its proper divisors (1287259).

256124741 is a wasteful number, since it uses less digits than its factorization.

256124741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287258.

The product of its digits is 13440, while the sum is 32.

The square root of 256124741 is about 16003.8976815025. The cubic root of 256124741 is about 635.0635363296.

The spelling of 256124741 in words is "two hundred fifty-six million, one hundred twenty-four thousand, seven hundred forty-one".