13889142 has 12 divisors (see below), whose sum is σ = 30093180. Its totient is φ = 4629708.

The previous prime is 13889089. The next prime is 13889143. The reversal of 13889142 is 24198831.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13889097 and 13889106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 385792 + ... + 385827.

It is an arithmetic number, because the mean of its divisors is an integer number (2507765).

Almost surely, 2^13889142 is an apocalyptic number.

13889142 is an abundant number, since it is smaller than the sum of its proper divisors (16204038).

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

13889142 is a wasteful number, since it uses less digits than its factorization.

13889142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771627 (or 771624 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13889142 is about 3726.8139207640. The cubic root of 13889142 is about 240.3763885733.

The spelling of 13889142 in words is "thirteen million, eight hundred eighty-nine thousand, one hundred forty-two".