99542430 has 96 divisors (see below), whose sum is σ = 281080800. Its totient is φ = 24295680.

The previous prime is 99542389. The next prime is 99542431. The reversal of 99542430 is 3424599.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99542431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174045 + ... + 174615.

It is an arithmetic number, because the mean of its divisors is an integer number (2927925).

Almost surely, 2^99542430 is an apocalyptic number.

99542430 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 99542430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140540400).

99542430 is an abundant number, since it is smaller than the sum of its proper divisors (181538370).

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

99542430 is a wasteful number, since it uses less digits than its factorization.

99542430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 99542430 is about 9977.0952686641. The cubic root of 99542430 is about 463.4498502173.

The spelling of 99542430 in words is "ninety-nine million, five hundred forty-two thousand, four hundred thirty".