55142 has 8 divisors (see below), whose sum is σ = 84000. Its totient is φ = 27144.

The previous prime is 55127. The next prime is 55147. The reversal of 55142 is 24155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 55142.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 55142.

It is not an unprimeable number, because it can be changed into a prime (55147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 332.

It is an arithmetic number, because the mean of its divisors is an integer number (10500).

2⁵⁵¹⁴² is an apocalyptic number.

55142 is a deficient number, since it is larger than the sum of its proper divisors (28858).

55142 is a wasteful number, since it uses less digits than its factorization.

55142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430.

The product of its digits is 200, while the sum is 17.

The square root of 55142 is about 234.8233378521. The cubic root of 55142 is about 38.0622249210.

Adding to 55142 its reverse (24155), we get a palindrome (79297).

The spelling of 55142 in words is "fifty-five thousand, one hundred forty-two".