42715640 has 32 divisors (see below), whose sum is σ = 104848560. Its totient is φ = 15532800.

The previous prime is 42715633. The next prime is 42715661. The reversal of 42715640 is 4651724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48101 + ... + 48980.

Almost surely, 2^42715640 is an apocalyptic number.

42715640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42715640 is an abundant number, since it is smaller than the sum of its proper divisors (62132920).

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

42715640 is a wasteful number, since it uses less digits than its factorization.

42715640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97103 (or 97099 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42715640 is about 6535.7203122533. The cubic root of 42715640 is about 349.5658289854.

The spelling of 42715640 in words is "forty-two million, seven hundred fifteen thousand, six hundred forty".