49942 has 4 divisors (see below), whose sum is σ = 74916. Its totient is φ = 24970.

The previous prime is 49939. The next prime is 49943. The reversal of 49942 is 24994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24994 = 2 ⋅12497.

It is a self number, because there is not a number n which added to its sum of digits gives 49942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12484 + ... + 12487.

It is an arithmetic number, because the mean of its divisors is an integer number (18729).

2⁴⁹⁹⁴² is an apocalyptic number.

49942 is a deficient number, since it is larger than the sum of its proper divisors (24974).

49942 is a wasteful number, since it uses less digits than its factorization.

49942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24973.

The product of its digits is 2592, while the sum is 28.

The square root of 49942 is about 223.4770681748. The cubic root of 49942 is about 36.8260645530.

The spelling of 49942 in words is "forty-nine thousand, nine hundred forty-two".