99724124 has 6 divisors (see below), whose sum is σ = 174517224. Its totient is φ = 49862060.

The previous prime is 99724099. The next prime is 99724129. The reversal of 99724124 is 42142799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99724129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12465512 + ... + 12465519.

It is an arithmetic number, because the mean of its divisors is an integer number (29086204).

Almost surely, 2^99724124 is an apocalyptic number.

It is an amenable number.

99724124 is a deficient number, since it is larger than the sum of its proper divisors (74793100).

99724124 is a wasteful number, since it uses less digits than its factorization.

99724124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24931035 (or 24931033 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 99724124 is about 9986.1966734088. The cubic root of 99724124 is about 463.7316559271.

The spelling of 99724124 in words is "ninety-nine million, seven hundred twenty-four thousand, one hundred twenty-four".