4004142 has 24 divisors (see below), whose sum is σ = 8229048. Its totient is φ = 1298880.

The previous prime is 4004141. The next prime is 4004179. The reversal of 4004142 is 2414004.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9888 + ... + 10284.

It is an arithmetic number, because the mean of its divisors is an integer number (342877).

Almost surely, 2^4004142 is an apocalyptic number.

4004142 is an abundant number, since it is smaller than the sum of its proper divisors (4224906).

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

4004142 is a wasteful number, since it uses less digits than its factorization.

4004142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4004142 is about 2001.0352320736. The cubic root of 4004142 is about 158.7948780884.

Adding to 4004142 its reverse (2414004), we get a palindrome (6418146).

The spelling of 4004142 in words is "four million, four thousand, one hundred forty-two".