4093942 has 4 divisors (see below), whose sum is σ = 6140916. Its totient is φ = 2046970.

The previous prime is 4093937. The next prime is 4093961. The reversal of 4093942 is 2493904.

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

It is a super-2 number, since 2×4093942² = 33520722198728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023484 + ... + 1023487.

It is an arithmetic number, because the mean of its divisors is an integer number (1535229).

Almost surely, 2^4093942 is an apocalyptic number.

4093942 is a deficient number, since it is larger than the sum of its proper divisors (2046974).

4093942 is a wasteful number, since it uses less digits than its factorization.

4093942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046973.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4093942 is about 2023.3492036720. The cubic root of 4093942 is about 159.9731986358.

The spelling of 4093942 in words is "four million, ninety-three thousand, nine hundred forty-two".