42347816 has 32 divisors (see below), whose sum is σ = 96085440. Its totient is φ = 17081088.

The previous prime is 42347813. The next prime is 42347821. The reversal of 42347816 is 61874324.

It is not an unprimeable number, because it can be changed into a prime (42347813) 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, 21290 + ... + 23193.

It is an arithmetic number, because the mean of its divisors is an integer number (3002670).

Almost surely, 2^42347816 is an apocalyptic number.

It is an amenable number.

42347816 is an abundant number, since it is smaller than the sum of its proper divisors (53737624).

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

42347816 is a wasteful number, since it uses less digits than its factorization.

42347816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44513 (or 44509 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 42347816 is about 6507.5199577105. The cubic root of 42347816 is about 348.5595657011.

The spelling of 42347816 in words is "forty-two million, three hundred forty-seven thousand, eight hundred sixteen".