42640674 has 16 divisors (see below), whose sum is σ = 89770080. Its totient is φ = 13465440.

The previous prime is 42640667. The next prime is 42640679. The reversal of 42640674 is 47604624.

It is not an unprimeable number, because it can be changed into a prime (42640679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186907 + ... + 187134.

It is an arithmetic number, because the mean of its divisors is an integer number (5610630).

Almost surely, 2^42640674 is an apocalyptic number.

42640674 is an abundant number, since it is smaller than the sum of its proper divisors (47129406).

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

42640674 is a wasteful number, since it uses less digits than its factorization.

42640674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374065.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 42640674 is about 6529.9826952298. The cubic root of 42640674 is about 349.3612130871.

The spelling of 42640674 in words is "forty-two million, six hundred forty thousand, six hundred seventy-four".