49142 has 4 divisors (see below), whose sum is σ = 73716. Its totient is φ = 24570.

The previous prime is 49139. The next prime is 49157. The reversal of 49142 is 24194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24194 = 2 ⋅12097.

It is a pancake number, because a pancake can be divided into 49142 parts by 313 straight cuts.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12284 + ... + 12287.

It is an arithmetic number, because the mean of its divisors is an integer number (18429).

2⁴⁹¹⁴² is an apocalyptic number.

49142 is a deficient number, since it is larger than the sum of its proper divisors (24574).

49142 is a wasteful number, since it uses less digits than its factorization.

49142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24573.

The product of its digits is 288, while the sum is 20.

The square root of 49142 is about 221.6799494767. The cubic root of 49142 is about 36.6283714043.

It can be divided in two parts, 49 and 142, that added together give a palindrome (191).

The spelling of 49142 in words is "forty-nine thousand, one hundred forty-two".