3901942 has 16 divisors (see below), whose sum is σ = 6761232. Its totient is φ = 1669120.

The previous prime is 3901907. The next prime is 3901943. The reversal of 3901942 is 2491093.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3901942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4843 + ... + 5590.

It is an arithmetic number, because the mean of its divisors is an integer number (422577).

Almost surely, 2^3901942 is an apocalyptic number.

3901942 is a deficient number, since it is larger than the sum of its proper divisors (2859290).

3901942 is a wasteful number, since it uses less digits than its factorization.

3901942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10463.

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

The square root of 3901942 is about 1975.3333895826. Note that the first 4 decimals coincide. The cubic root of 3901942 is about 157.4322140483.

It can be divided in two parts, 390 and 1942, that added together give a palindrome (2332).

The spelling of 3901942 in words is "three million, nine hundred one thousand, nine hundred forty-two".