42723126056 has 64 divisors (see below), whose sum is σ = 87594393600. Its totient is φ = 19416503808.

The previous prime is 42723126031. The next prime is 42723126059. The reversal of 42723126056 is 65062132724.

It is a super-2 number, since 2×42723126056² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42723126059) 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, 3139940 + ... + 3153516.

It is an arithmetic number, because the mean of its divisors is an integer number (1368662400).

Almost surely, 2^42723126056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42723126056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43797196800).

42723126056 is an abundant number, since it is smaller than the sum of its proper divisors (44871267544).

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

42723126056 is a wasteful number, since it uses less digits than its factorization.

42723126056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14058 (or 14054 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 42723126056 in words is "forty-two billion, seven hundred twenty-three million, one hundred twenty-six thousand, fifty-six".