18101142 has 12 divisors (see below), whose sum is σ = 39219180. Its totient is φ = 6033708.

The previous prime is 18101137. The next prime is 18101147. The reversal of 18101142 is 24110181.

It is an interprime number because it is at equal distance from previous prime (18101137) and next prime (18101147).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1005619 = 18101142 / (1 + 8 + 1 + 0 + 1 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18101147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 502792 + ... + 502827.

It is an arithmetic number, because the mean of its divisors is an integer number (3268265).

Almost surely, 2^18101142 is an apocalyptic number.

18101142 is an abundant number, since it is smaller than the sum of its proper divisors (21118038).

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

18101142 is a wasteful number, since it uses less digits than its factorization.

18101142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005627 (or 1005624 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 18101142 is about 4254.5436888108. The cubic root of 18101142 is about 262.5640877535.

The spelling of 18101142 in words is "eighteen million, one hundred one thousand, one hundred forty-two".