17942 has 4 divisors (see below), whose sum is σ = 26916. Its totient is φ = 8970.

The previous prime is 17939. The next prime is 17957. The reversal of 17942 is 24971.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 14.

It is a nialpdrome in base 13.

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, 4484 + ... + 4487.

It is an arithmetic number, because the mean of its divisors is an integer number (6729).

2¹⁷⁹⁴² is an apocalyptic number.

17942 is a deficient number, since it is larger than the sum of its proper divisors (8974).

17942 is an equidigital number, since it uses as much as digits as its factorization.

17942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8973.

The product of its digits is 504, while the sum is 23.

The square root of 17942 is about 133.9477510076. The cubic root of 17942 is about 26.1792349502.

It can be divided in two parts, 17 and 942, that added together give a palindrome (959).

The spelling of 17942 in words is "seventeen thousand, nine hundred forty-two".