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56142 = 2323119
BaseRepresentation
bin1101101101001110
32212000100
431231032
53244032
61111530
7322452
oct155516
985010
1056142
11391a9
12285a6
131c728
1416662
151197c
hexdb4e

56142 has 12 divisors (see below), whose sum is σ = 121680. Its totient is φ = 18708.

The previous prime is 56131. The next prime is 56149. The reversal of 56142 is 24165.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 3119 = 56142 / (5 + 6 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56149) by changing a digit.

56142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1542 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (10140).

256142 is an apocalyptic number.

56142 is an abundant number, since it is smaller than the sum of its proper divisors (65538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56142 is a wasteful number, since it uses less digits than its factorization.

56142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3124 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 56142 is about 236.9430311277. The cubic root of 56142 is about 38.2909340071.

The spelling of 56142 in words is "fifty-six thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 18 3119 6238 9357 18714 28071 56142