6942391 has 6 divisors (see below), whose sum is σ = 7327392. Its totient is φ = 6576660.

The previous prime is 6942379. The next prime is 6942401. The reversal of 6942391 is 1932496.

It is not a de Polignac number, because 6942391 - 2⁵ = 6942359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6942301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9255 + ... + 9976.

It is an arithmetic number, because the mean of its divisors is an integer number (1221232).

Almost surely, 2^6942391 is an apocalyptic number.

6942391 is a deficient number, since it is larger than the sum of its proper divisors (385001).

6942391 is a wasteful number, since it uses less digits than its factorization.

6942391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19269 (or 19250 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 6942391 is about 2634.8417409780. The cubic root of 6942391 is about 190.7669003816.

The spelling of 6942391 in words is "six million, nine hundred forty-two thousand, three hundred ninety-one".