99042101 has 12 divisors (see below), whose sum is σ = 103641804. Its totient is φ = 94564800.

The previous prime is 99042091. The next prime is 99042109. The reversal of 99042101 is 10124099.

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 95082001 = 1990^2 + 9751^2 .

It is a de Polignac number, because none of the positive numbers 2^k-99042101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99042109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497600 + ... + 497798.

It is an arithmetic number, because the mean of its divisors is an integer number (8636817).

Almost surely, 2^99042101 is an apocalyptic number.

It is an amenable number.

99042101 is a deficient number, since it is larger than the sum of its proper divisors (4599703).

99042101 is an equidigital number, since it uses as much as digits as its factorization.

99042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 99042101 is about 9951.9898010398. The cubic root of 99042101 is about 462.6720680432.

The spelling of 99042101 in words is "ninety-nine million, forty-two thousand, one hundred one".