18103242 has 8 divisors (see below), whose sum is σ = 36206496. Its totient is φ = 6034412.

The previous prime is 18103237. The next prime is 18103243. The reversal of 18103242 is 24230181.

It is a sphenic number, since it is the product of 3 distinct primes.

18103242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18103243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508598 + ... + 1508609.

It is an arithmetic number, because the mean of its divisors is an integer number (4525812).

Almost surely, 2^18103242 is an apocalyptic number.

18103242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18103242 is a wasteful number, since it uses less digits than its factorization.

18103242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017212.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18103242 is about 4254.7904766275. The cubic root of 18103242 is about 262.5742411324.

The spelling of 18103242 in words is "eighteen million, one hundred three thousand, two hundred forty-two".