42474638 has 4 divisors (see below), whose sum is σ = 63711960. Its totient is φ = 21237318.

The previous prime is 42474637. The next prime is 42474661. The reversal of 42474638 is 83647424.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42474637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10618658 + ... + 10618661.

It is an arithmetic number, because the mean of its divisors is an integer number (15927990).

Almost surely, 2^42474638 is an apocalyptic number.

42474638 is a deficient number, since it is larger than the sum of its proper divisors (21237322).

42474638 is a wasteful number, since it uses less digits than its factorization.

42474638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21237321.

The product of its digits is 129024, while the sum is 38.

The square root of 42474638 is about 6517.2569383138. The cubic root of 42474638 is about 348.9071709279.

The spelling of 42474638 in words is "forty-two million, four hundred seventy-four thousand, six hundred thirty-eight".