42490715670 has 128 divisors (see below), whose sum is σ = 122119764480. Its totient is φ = 10451099520.

The previous prime is 42490715651. The next prime is 42490715681. The reversal of 42490715670 is 7651709424.

42490715670 is a `hidden beast` number, since 4 + 2 + 490 + 7 + 156 + 7 + 0 = 666.

42490715670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5369857 + ... + 5377763.

It is an arithmetic number, because the mean of its divisors is an integer number (954060660).

Almost surely, 2^42490715670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42490715670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61059882240).

42490715670 is an abundant number, since it is smaller than the sum of its proper divisors (79629048810).

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

42490715670 is a wasteful number, since it uses less digits than its factorization.

42490715670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9467 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 42490715670 in words is "forty-two billion, four hundred ninety million, seven hundred fifteen thousand, six hundred seventy".