3990142 has 24 divisors (see below), whose sum is σ = 6678504. Its totient is φ = 1777104.

The previous prime is 3990127. The next prime is 3990157. The reversal of 3990142 is 2410993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3990127) and next prime (3990157).

It is a self number, because there is not a number n which added to its sum of digits gives 3990142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48033 + ... + 48115.

It is an arithmetic number, because the mean of its divisors is an integer number (278271).

Almost surely, 2^3990142 is an apocalyptic number.

3990142 is a deficient number, since it is larger than the sum of its proper divisors (2688362).

3990142 is a wasteful number, since it uses less digits than its factorization.

3990142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 3990142 is about 1997.5339796860. The cubic root of 3990142 is about 158.6095929258.

It can be divided in two parts, 3990 and 142, that multiplied together give a triangular number (566580 = T₁₀₆₄).

The spelling of 3990142 in words is "three million, nine hundred ninety thousand, one hundred forty-two".