13942 has 4 divisors (see below), whose sum is σ = 20916. Its totient is φ = 6970.

The previous prime is 13933. The next prime is 13963. The reversal of 13942 is 24931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24931 = 107 ⋅233.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3484 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (5229).

2¹³⁹⁴² is an apocalyptic number.

13942 is a deficient number, since it is larger than the sum of its proper divisors (6974).

13942 is an equidigital number, since it uses as much as digits as its factorization.

13942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973.

The product of its digits is 216, while the sum is 19.

The square root of 13942 is about 118.0762465528. The cubic root of 13942 is about 24.0680936566.

It can be divided in two parts, 139 and 42, that added together give a palindrome (181).

The spelling of 13942 in words is "thirteen thousand, nine hundred forty-two".