3971142 has 24 divisors (see below), whose sum is σ = 9833616. Its totient is φ = 1134576.

The previous prime is 3971141. The next prime is 3971147. The reversal of 3971142 is 2411793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971141) 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, 15633 + ... + 15884.

It is an arithmetic number, because the mean of its divisors is an integer number (409734).

Almost surely, 2^3971142 is an apocalyptic number.

3971142 is an abundant number, since it is smaller than the sum of its proper divisors (5862474).

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

3971142 is a wasteful number, since it uses less digits than its factorization.

3971142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31532 (or 31529 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3971142 is about 1992.7724405963. The cubic root of 3971142 is about 158.3574399737.

The spelling of 3971142 in words is "three million, nine hundred seventy-one thousand, one hundred forty-two".