99142790 has 16 divisors (see below), whose sum is σ = 179762112. Its totient is φ = 39367104.

The previous prime is 99142789. The next prime is 99142801. The reversal of 99142790 is 9724199.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34814 + ... + 37553.

It is an arithmetic number, because the mean of its divisors is an integer number (11235132).

Almost surely, 2^99142790 is an apocalyptic number.

99142790 is a deficient number, since it is larger than the sum of its proper divisors (80619322).

99142790 is a wasteful number, since it uses less digits than its factorization.

99142790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72511.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 99142790 is about 9957.0472530766. The cubic root of 99142790 is about 462.8288034430.

The spelling of 99142790 in words is "ninety-nine million, one hundred forty-two thousand, seven hundred ninety".