256142735 has 16 divisors (see below), whose sum is σ = 311493600. Its totient is φ = 202185216.

The previous prime is 256142729. The next prime is 256142737. The reversal of 256142735 is 537241652.

It is a cyclic number.

It is not a de Polignac number, because 256142735 - 2¹⁸ = 255880591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256142695 and 256142704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256142737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121571 + ... + 123659.

It is an arithmetic number, because the mean of its divisors is an integer number (19468350).

Almost surely, 2^256142735 is an apocalyptic number.

256142735 is a deficient number, since it is larger than the sum of its proper divisors (55350865).

256142735 is a wasteful number, since it uses less digits than its factorization.

256142735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its digits is 50400, while the sum is 35.

The square root of 256142735 is about 16004.4598471801. The cubic root of 256142735 is about 635.0784080748.

The spelling of 256142735 in words is "two hundred fifty-six million, one hundred forty-two thousand, seven hundred thirty-five".