42731389740 has 144 divisors (see below), whose sum is σ = 129691473408. Its totient is φ = 10507790592.

The previous prime is 42731389739. The next prime is 42731389777. The reversal of 42731389740 is 4798313724.

It is a super-2 number, since 2×42731389740² (a number of 22 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 42731389740.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15441837 + ... + 15444603.

It is an arithmetic number, because the mean of its divisors is an integer number (900635232).

Almost surely, 2^42731389740 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 42731389740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64845736704).

42731389740 is an abundant number, since it is smaller than the sum of its proper divisors (86960083668).

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

42731389740 is a wasteful number, since it uses less digits than its factorization.

42731389740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328 (or 4313 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 42731389740 in words is "forty-two billion, seven hundred thirty-one million, three hundred eighty-nine thousand, seven hundred forty".