7857342 has 24 divisors (see below), whose sum is σ = 17179344. Its totient is φ = 2595264.

The previous prime is 7857337. The next prime is 7857359. The reversal of 7857342 is 2437587.

It is a junction number, because it is equal to n+sod(n) for n = 7857297 and 7857306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103 + ... + 3965.

It is an arithmetic number, because the mean of its divisors is an integer number (715806).

Almost surely, 2^7857342 is an apocalyptic number.

7857342 is an abundant number, since it is smaller than the sum of its proper divisors (9322002).

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

7857342 is a wasteful number, since it uses less digits than its factorization.

7857342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984 (or 3981 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 7857342 is about 2803.0950750911. The cubic root of 7857342 is about 198.8040460590.

The spelling of 7857342 in words is "seven million, eight hundred fifty-seven thousand, three hundred forty-two".