42720413756 has 6 divisors (see below), whose sum is σ = 74760724080. Its totient is φ = 21360206876.

The previous prime is 42720413741. The next prime is 42720413759. The reversal of 42720413756 is 65731402724.

42720413756 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 not an unprimeable number, because it can be changed into a prime (42720413759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340051716 + ... + 5340051723.

It is an arithmetic number, because the mean of its divisors is an integer number (12460120680).

Almost surely, 2^42720413756 is an apocalyptic number.

It is an amenable number.

42720413756 is a deficient number, since it is larger than the sum of its proper divisors (32040310324).

42720413756 is a wasteful number, since it uses less digits than its factorization.

42720413756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680103443 (or 10680103441 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 42720413756 in words is "forty-two billion, seven hundred twenty million, four hundred thirteen thousand, seven hundred fifty-six".