7797842 has 16 divisors (see below), whose sum is σ = 12673752. Its totient is φ = 3576960.

The previous prime is 7797841. The next prime is 7797877. The reversal of 7797842 is 2487977.

It can be written as a sum of positive squares in 4 ways, for example, as 2128681 + 5669161 = 1459^2 + 2381^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7797793 and 7797802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7797841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3878 + ... + 5534.

Almost surely, 2^7797842 is an apocalyptic number.

7797842 is a deficient number, since it is larger than the sum of its proper divisors (4875910).

7797842 is a wasteful number, since it uses less digits than its factorization.

7797842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its digits is 197568, while the sum is 44.

The square root of 7797842 is about 2792.4616380534. The cubic root of 7797842 is about 198.3009571393.

The spelling of 7797842 in words is "seven million, seven hundred ninety-seven thousand, eight hundred forty-two".