99742940 has 24 divisors (see below), whose sum is σ = 228502512. Its totient is φ = 36270080.

The previous prime is 99742933. The next prime is 99742943. The reversal of 99742940 is 4924799.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 99742891 and 99742900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99742943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226469 + ... + 226908.

It is an arithmetic number, because the mean of its divisors is an integer number (9520938).

Almost surely, 2^99742940 is an apocalyptic number.

It is an amenable number.

99742940 is an abundant number, since it is smaller than the sum of its proper divisors (128759572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99742940 is a wasteful number, since it uses less digits than its factorization.

99742940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453397 (or 453395 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 99742940 is about 9987.1387293859. The cubic root of 99742940 is about 463.7608198036.

The spelling of 99742940 in words is "ninety-nine million, seven hundred forty-two thousand, nine hundred forty".