18142204 has 24 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 8855280.

The previous prime is 18142199. The next prime is 18142217. The reversal of 18142204 is 40224181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35817 + ... + 36319.

It is an arithmetic number, because the mean of its divisors is an integer number (1354752).

Almost surely, 2^18142204 is an apocalyptic number.

It is an amenable number.

18142204 is a deficient number, since it is larger than the sum of its proper divisors (14371844).

18142204 is a wasteful number, since it uses less digits than its factorization.

18142204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 18142204 is about 4259.3666195809. The cubic root of 18142204 is about 262.7624778951.

Adding to 18142204 its reverse (40224181), we get a palindrome (58366385).

The spelling of 18142204 in words is "eighteen million, one hundred forty-two thousand, two hundred four".