256734142123002 has 16 divisors (see below), whose sum is σ = 522171136522080. Its totient is φ = 84127571994992.

The previous prime is 256734142122979. The next prime is 256734142123031. The reversal of 256734142123002 is 200321241437652.

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, 362618844453 + ... + 362618845160.

It is an arithmetic number, because the mean of its divisors is an integer number (32635696032630).

Almost surely, 2^{256734142123002} is an apocalyptic number.

256734142123002 is an abundant number, since it is smaller than the sum of its proper divisors (265436994399078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256734142123002 is a wasteful number, since it uses less digits than its factorization.

256734142123002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725237689677.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 256734142123002 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, one hundred forty-two million, one hundred twenty-three thousand, two".