6891142 has 8 divisors (see below), whose sum is σ = 10395000. Its totient is φ = 3426144.

The previous prime is 6891133. The next prime is 6891149. The reversal of 6891142 is 2411986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6891149) 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, 9267 + ... + 9982.

It is an arithmetic number, because the mean of its divisors is an integer number (1299375).

Almost surely, 2^6891142 is an apocalyptic number.

6891142 is a deficient number, since it is larger than the sum of its proper divisors (3503858).

6891142 is a wasteful number, since it uses less digits than its factorization.

6891142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19430.

The product of its digits is 3456, while the sum is 31.

The square root of 6891142 is about 2625.0984743434. The cubic root of 6891142 is about 190.2963243155.

The spelling of 6891142 in words is "six million, eight hundred ninety-one thousand, one hundred forty-two".