47942 has 4 divisors (see below), whose sum is σ = 71916. Its totient is φ = 23970.

The previous prime is 47939. The next prime is 47947. The reversal of 47942 is 24974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24974 = 2 ⋅12487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11984 + ... + 11987.

It is an arithmetic number, because the mean of its divisors is an integer number (17979).

2⁴⁷⁹⁴² is an apocalyptic number.

47942 is a deficient number, since it is larger than the sum of its proper divisors (23974).

47942 is a wasteful number, since it uses less digits than its factorization.

47942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23973.

The product of its digits is 2016, while the sum is 26.

The square root of 47942 is about 218.9566167075. The cubic root of 47942 is about 36.3277680410.

It can be divided in two parts, 47 and 942, that added together give a palindrome (989).

The spelling of 47942 in words is "forty-seven thousand, nine hundred forty-two".