42207808 has 14 divisors (see below), whose sum is σ = 83756246. Its totient is φ = 21103872.

The previous prime is 42207793. The next prime is 42207817. The reversal of 42207808 is 80870224.

It can be written as a sum of positive squares in only one way, i.e., 32171584 + 10036224 = 5672^2 + 3168^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42207808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329685 + ... + 329812.

It is an arithmetic number, because the mean of its divisors is an integer number (5982589).

Almost surely, 2^42207808 is an apocalyptic number.

It is an amenable number.

42207808 is a deficient number, since it is larger than the sum of its proper divisors (41548438).

42207808 is an equidigital number, since it uses as much as digits as its factorization.

42207808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659509 (or 659499 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 42207808 is about 6496.7536508629. The cubic root of 42207808 is about 348.1750121595.

The spelling of 42207808 in words is "forty-two million, two hundred seven thousand, eight hundred eight".