99742230 has 192 divisors, whose sum is σ = 320785920. Its totient is φ = 20984832.

The previous prime is 99742199. The next prime is 99742261. The reversal of 99742230 is 3224799.

It is an interprime number because it is at equal distance from previous prime (99742199) and next prime (99742261).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 717501 + ... + 717639.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^99742230 is an apocalyptic number.

99742230 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99742230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160392960).

99742230 is an abundant number, since it is smaller than the sum of its proper divisors (221043690).

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

99742230 is a wasteful number, since it uses less digits than its factorization.

99742230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 99742230 is about 9987.1031836063. The cubic root of 99742230 is about 463.7597194050.

The spelling of 99742230 in words is "ninety-nine million, seven hundred forty-two thousand, two hundred thirty".