42990099 has 16 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 27617600.

The previous prime is 42990097. The next prime is 42990107. The reversal of 42990099 is 99009924.

It is not a de Polignac number, because 42990099 - 2¹ = 42990097 is a prime.

It is a super-2 number, since 2×42990099² = 3696297224059602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42990099.

It is not an unprimeable number, because it can be changed into a prime (42990091) 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, 8104 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (3714984).

Almost surely, 2^42990099 is an apocalyptic number.

42990099 is a deficient number, since it is larger than the sum of its proper divisors (16449645).

42990099 is a wasteful number, since it uses less digits than its factorization.

42990099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 42990099 is about 6556.6835366670. The cubic root of 42990099 is about 350.3129147155.

The spelling of 42990099 in words is "forty-two million, nine hundred ninety thousand, ninety-nine".