3921942 has 16 divisors (see below), whose sum is σ = 8256960. Its totient is φ = 1238472.

The previous prime is 3921941. The next prime is 3921949. The reversal of 3921942 is 2491293.

3921942 = T₆₃₃ + T₆₃₄ + ... + T₆₅₁.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921941) 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, 17088 + ... + 17315.

It is an arithmetic number, because the mean of its divisors is an integer number (516060).

Almost surely, 2^3921942 is an apocalyptic number.

3921942 is an abundant number, since it is smaller than the sum of its proper divisors (4335018).

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

3921942 is a wasteful number, since it uses less digits than its factorization.

3921942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34427.

The product of its digits is 3888, while the sum is 30.

The square root of 3921942 is about 1980.3893556571. The cubic root of 3921942 is about 157.7007367419.

The spelling of 3921942 in words is "three million, nine hundred twenty-one thousand, nine hundred forty-two".