256735642113142 has 16 divisors (see below), whose sum is σ = 385173930603312. Its totient is φ = 128344333593600.

The previous prime is 256735642113029. The next prime is 256735642113179. The reversal of 256735642113142 is 241311246537652.

It is a happy number.

It is a super-2 number, since 2×256735642113142² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256735642113142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315751017 + ... + 316563067.

It is an arithmetic number, because the mean of its divisors is an integer number (24073370662707).

Almost surely, 2^{256735642113142} is an apocalyptic number.

256735642113142 is a deficient number, since it is larger than the sum of its proper divisors (128438288490170).

256735642113142 is a wasteful number, since it uses less digits than its factorization.

256735642113142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840783.

The product of its digits is 7257600, while the sum is 52.

The spelling of 256735642113142 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, six hundred forty-two million, one hundred thirteen thousand, one hundred forty-two".