42640410 has 32 divisors (see below), whose sum is σ = 104836032. Its totient is φ = 11093120.

The previous prime is 42640393. The next prime is 42640417. The reversal of 42640410 is 1404624.

It is not an unprimeable number, because it can be changed into a prime (42640417) 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, 16104 + ... + 18563.

It is an arithmetic number, because the mean of its divisors is an integer number (3276126).

Almost surely, 2^42640410 is an apocalyptic number.

42640410 is an abundant number, since it is smaller than the sum of its proper divisors (62195622).

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

42640410 is a wasteful number, since it uses less digits than its factorization.

42640410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34718.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42640410 is about 6529.9624807498. The cubic root of 42640410 is about 349.3604920889.

The spelling of 42640410 in words is "forty-two million, six hundred forty thousand, four hundred ten".