99904142 has 16 divisors (see below), whose sum is σ = 161784672. Its totient is φ = 45995040.

The previous prime is 99904139. The next prime is 99904163. The reversal of 99904142 is 24140999.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 99904096 and 99904105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6383 + ... + 15509.

It is an arithmetic number, because the mean of its divisors is an integer number (10111542).

Almost surely, 2^99904142 is an apocalyptic number.

99904142 is a deficient number, since it is larger than the sum of its proper divisors (61880530).

99904142 is a wasteful number, since it uses less digits than its factorization.

99904142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9563.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 99904142 is about 9995.2059508546. The cubic root of 99904142 is about 464.0105248059.

The spelling of 99904142 in words is "ninety-nine million, nine hundred four thousand, one hundred forty-two".