99942651 has 24 divisors (see below), whose sum is σ = 147054336. Its totient is φ = 65398320.

The previous prime is 99942629. The next prime is 99942673. The reversal of 99942651 is 15624999.

It is an interprime number because it is at equal distance from previous prime (99942629) and next prime (99942673).

It is not a de Polignac number, because 99942651 - 2¹⁵ = 99909883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99942597 and 99942606.

It is not an unprimeable number, because it can be changed into a prime (99942611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121026 + ... + 121848.

It is an arithmetic number, because the mean of its divisors is an integer number (6127264).

Almost surely, 2^99942651 is an apocalyptic number.

99942651 is a deficient number, since it is larger than the sum of its proper divisors (47111685).

99942651 is a wasteful number, since it uses less digits than its factorization.

99942651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1060 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 99942651 is about 9997.1321387686. The cubic root of 99942651 is about 464.0701362346.

The spelling of 99942651 in words is "ninety-nine million, nine hundred forty-two thousand, six hundred fifty-one".