3861142 has 32 divisors (see below), whose sum is σ = 6652800. Its totient is φ = 1669248.

The previous prime is 3861119. The next prime is 3861167. The reversal of 3861142 is 2411683.

3861142 = T₆₂₈ + T₆₂₉ + ... + T₆₄₆.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27709 + ... + 27847.

It is an arithmetic number, because the mean of its divisors is an integer number (207900).

Almost surely, 2^3861142 is an apocalyptic number.

3861142 is a deficient number, since it is larger than the sum of its proper divisors (2791658).

3861142 is a wasteful number, since it uses less digits than its factorization.

3861142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

The product of its digits is 1152, while the sum is 25.

The square root of 3861142 is about 1964.9788802936. The cubic root of 3861142 is about 156.8815691709.

The spelling of 3861142 in words is "three million, eight hundred sixty-one thousand, one hundred forty-two".