42990504490 has 32 divisors (see below), whose sum is σ = 79875512640. Its totient is φ = 16648694400.

The previous prime is 42990504463. The next prime is 42990504493. The reversal of 42990504490 is 9440509924.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42990504490.

It is not an unprimeable number, because it can be changed into a prime (42990504493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346500 + ... + 453919.

It is an arithmetic number, because the mean of its divisors is an integer number (2496109770).

Almost surely, 2^42990504490 is an apocalyptic number.

42990504490 is a deficient number, since it is larger than the sum of its proper divisors (36885008150).

42990504490 is a wasteful number, since it uses less digits than its factorization.

42990504490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800598.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 42990504490 in words is "forty-two billion, nine hundred ninety million, five hundred four thousand, four hundred ninety".