3942943 has 4 divisors (see below), whose sum is σ = 3981328. Its totient is φ = 3904560.

The previous prime is 3942941. The next prime is 3942947. The reversal of 3942943 is 3492493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3942943 - 2¹ = 3942941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3942899 and 3942908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19038 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (995332).

Almost surely, 2^3942943 is an apocalyptic number.

3942943 is a deficient number, since it is larger than the sum of its proper divisors (38385).

3942943 is a wasteful number, since it uses less digits than its factorization.

3942943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38384.

The product of its digits is 23328, while the sum is 34.

The square root of 3942943 is about 1985.6845167347. The cubic root of 3942943 is about 157.9817182287.

The spelling of 3942943 in words is "three million, nine hundred forty-two thousand, nine hundred forty-three".