18342742 has 16 divisors (see below), whose sum is σ = 30114000. Its totient is φ = 8310240.

The previous prime is 18342691. The next prime is 18342743. The reversal of 18342742 is 24724381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6484 + ... + 8872.

It is an arithmetic number, because the mean of its divisors is an integer number (1882125).

Almost surely, 2^18342742 is an apocalyptic number.

18342742 is a deficient number, since it is larger than the sum of its proper divisors (11771258).

18342742 is a wasteful number, since it uses less digits than its factorization.

18342742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751.

The product of its digits is 10752, while the sum is 31.

The square root of 18342742 is about 4282.8427475218. The cubic root of 18342742 is about 263.7270959349.

The spelling of 18342742 in words is "eighteen million, three hundred forty-two thousand, seven hundred forty-two".