99271242 has 48 divisors (see below), whose sum is σ = 248951040. Its totient is φ = 28001376.

The previous prime is 99271241. The next prime is 99271247. The reversal of 99271242 is 24217299.

It is a junction number, because it is equal to n+sod(n) for n = 99271197 and 99271206.

It is not an unprimeable number, because it can be changed into a prime (99271241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4968 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (5186480).

Almost surely, 2^99271242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99271242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124475520).

99271242 is an abundant number, since it is smaller than the sum of its proper divisors (149679798).

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

99271242 is a wasteful number, since it uses less digits than its factorization.

99271242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067 (or 10064 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 99271242 is about 9963.4954709680. The cubic root of 99271242 is about 463.0286015604.

The spelling of 99271242 in words is "ninety-nine million, two hundred seventy-one thousand, two hundred forty-two".