642475410 has 16 divisors (see below), whose sum is σ = 1541941056. Its totient is φ = 171326768.

The previous prime is 642475387. The next prime is 642475439. The reversal of 642475410 is 14574246.

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, 10707894 + ... + 10707953.

It is an arithmetic number, because the mean of its divisors is an integer number (96371316).

Almost surely, 2^642475410 is an apocalyptic number.

642475410 is an abundant number, since it is smaller than the sum of its proper divisors (899465646).

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

642475410 is a wasteful number, since it uses less digits than its factorization.

642475410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21415857.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 642475410 is about 25347.0986505359. The cubic root of 642475410 is about 862.8835110259.

The spelling of 642475410 in words is "six hundred forty-two million, four hundred seventy-five thousand, four hundred ten".