42254721256 has 16 divisors (see below), whose sum is σ = 86430111840. Its totient is φ = 19206691440.

The previous prime is 42254721247. The next prime is 42254721343. The reversal of 42254721256 is 65212745224.

42254721256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42254721256² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240083556 + ... + 240083731.

It is an arithmetic number, because the mean of its divisors is an integer number (5401881990).

Almost surely, 2^42254721256 is an apocalyptic number.

It is an amenable number.

42254721256 is an abundant number, since it is smaller than the sum of its proper divisors (44175390584).

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

42254721256 is a wasteful number, since it uses less digits than its factorization.

42254721256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480167304 (or 480167300 counting only the distinct ones).

The product of its digits is 268800, while the sum is 40.

The spelling of 42254721256 in words is "forty-two billion, two hundred fifty-four million, seven hundred twenty-one thousand, two hundred fifty-six".