3957942 has 8 divisors (see below), whose sum is σ = 7915896. Its totient is φ = 1319312.

The previous prime is 3957937. The next prime is 3957953. The reversal of 3957942 is 2497593.

It is a sphenic number, since it is the product of 3 distinct primes.

3957942 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 3957942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329823 + ... + 329834.

It is an arithmetic number, because the mean of its divisors is an integer number (989487).

Almost surely, 2^3957942 is an apocalyptic number.

3957942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3957942 is a wasteful number, since it uses less digits than its factorization.

3957942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659662.

The product of its digits is 68040, while the sum is 39.

The square root of 3957942 is about 1989.4577150570. The cubic root of 3957942 is about 158.1817861733.

It can be divided in two parts, 39579 and 42, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 3957942 in words is "three million, nine hundred fifty-seven thousand, nine hundred forty-two".