256168142 has 32 divisors (see below), whose sum is σ = 402361344. Its totient is φ = 122231200.

The previous prime is 256168139. The next prime is 256168163. The reversal of 256168142 is 241861652.

256168142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874148 + ... + 874440.

It is an arithmetic number, because the mean of its divisors is an integer number (12573792).

Almost surely, 2^256168142 is an apocalyptic number.

256168142 is a deficient number, since it is larger than the sum of its proper divisors (146193202).

256168142 is a wasteful number, since it uses less digits than its factorization.

256168142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its digits is 23040, while the sum is 35.

The square root of 256168142 is about 16005.2535749984. The cubic root of 256168142 is about 635.0994053567.

The spelling of 256168142 in words is "two hundred fifty-six million, one hundred sixty-eight thousand, one hundred forty-two".