42612640 has 48 divisors (see below), whose sum is σ = 115057152. Its totient is φ = 14609664.

The previous prime is 42612599. The next prime is 42612677. The reversal of 42612640 is 4621624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17904 + ... + 20143.

It is an arithmetic number, because the mean of its divisors is an integer number (2397024).

Almost surely, 2^42612640 is an apocalyptic number.

42612640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42612640 is an abundant number, since it is smaller than the sum of its proper divisors (72444512).

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

42612640 is a wasteful number, since it uses less digits than its factorization.

42612640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38069 (or 38061 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42612640 is about 6527.8357822482. The cubic root of 42612640 is about 349.2846340960.

The spelling of 42612640 in words is "forty-two million, six hundred twelve thousand, six hundred forty".