18342142 has 32 divisors (see below), whose sum is σ = 34965504. Its totient is φ = 7020000.

The previous prime is 18342131. The next prime is 18342143. The reversal of 18342142 is 24124381.

It is a super-3 number, since 3×18342142³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4017 + ... + 7267.

It is an arithmetic number, because the mean of its divisors is an integer number (1092672).

Almost surely, 2^18342142 is an apocalyptic number.

18342142 is a deficient number, since it is larger than the sum of its proper divisors (16623362).

18342142 is a wasteful number, since it uses less digits than its factorization.

18342142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304.

The product of its digits is 1536, while the sum is 25.

The square root of 18342142 is about 4282.7727000157. The cubic root of 18342142 is about 263.7242203564.

The spelling of 18342142 in words is "eighteen million, three hundred forty-two thousand, one hundred forty-two".