109288242 has 48 divisors (see below), whose sum is σ = 271881792. Its totient is φ = 31079520.

The previous prime is 109288181. The next prime is 109288243. The reversal of 109288242 is 242882901.

It is a junction number, because it is equal to n+sod(n) for n = 109288197 and 109288206.

It is not an unprimeable number, because it can be changed into a prime (109288243) 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, 26692 + ... + 30512.

It is an arithmetic number, because the mean of its divisors is an integer number (5664204).

Almost surely, 2^109288242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109288242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135940896).

109288242 is an abundant number, since it is smaller than the sum of its proper divisors (162593550).

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

109288242 is a wasteful number, since it uses less digits than its factorization.

109288242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063 (or 4060 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 109288242 is about 10454.1016830716. The cubic root of 109288242 is about 478.1063149433.

The spelling of 109288242 in words is "one hundred nine million, two hundred eighty-eight thousand, two hundred forty-two".