7822042 has 4 divisors (see below), whose sum is σ = 11733066. Its totient is φ = 3911020.

The previous prime is 7822039. The next prime is 7822109. The reversal of 7822042 is 2402287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2402287 = 17 ⋅141311.

It can be written as a sum of positive squares in only one way, i.e., 6155361 + 1666681 = 2481^2 + 1291^2 .

It is a super-2 number, since 2×7822042² = 122368682099528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7821998 and 7822016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1955509 + ... + 1955512.

Almost surely, 2^7822042 is an apocalyptic number.

7822042 is a deficient number, since it is larger than the sum of its proper divisors (3911024).

7822042 is a wasteful number, since it uses less digits than its factorization.

7822042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911023.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 7822042 is about 2796.7913758448. The cubic root of 7822042 is about 198.5058825270.

The spelling of 7822042 in words is "seven million, eight hundred twenty-two thousand, forty-two".