109902243 has 24 divisors (see below), whose sum is σ = 161798224. Its totient is φ = 66306240.

The previous prime is 109902217. The next prime is 109902253. The reversal of 109902243 is 342209901.

It is not a de Polignac number, because 109902243 - 2⁹ = 109901731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109902243.

It is not an unprimeable number, because it can be changed into a prime (109902253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100005 + ... + 101097.

Almost surely, 2^109902243 is an apocalyptic number.

109902243 is a deficient number, since it is larger than the sum of its proper divisors (51895981).

109902243 is a wasteful number, since it uses less digits than its factorization.

109902243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 109902243 is about 10483.4270637039. The cubic root of 109902243 is about 479.0000058112. Note that the first 5 decimals are identical.

The spelling of 109902243 in words is "one hundred nine million, nine hundred two thousand, two hundred forty-three".