4055142 has 48 divisors (see below), whose sum is σ = 10169712. Its totient is φ = 1068480.

The previous prime is 4055137. The next prime is 4055143. The reversal of 4055142 is 2415504.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4055143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3292 + ... + 4352.

It is an arithmetic number, because the mean of its divisors is an integer number (211869).

Almost surely, 2^4055142 is an apocalyptic number.

4055142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4055142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5084856).

4055142 is an abundant number, since it is smaller than the sum of its proper divisors (6114570).

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

4055142 is a wasteful number, since it uses less digits than its factorization.

4055142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4055142 is about 2013.7383146775. The cubic root of 4055142 is about 159.4662159884.

The spelling of 4055142 in words is "four million, fifty-five thousand, one hundred forty-two".