7868942 has 4 divisors (see below), whose sum is σ = 11803416. Its totient is φ = 3934470.

The previous prime is 7868933. The next prime is 7868969. The reversal of 7868942 is 2498687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2498687 = 43 ⋅58109.

It is a d-powerful number, because it can be written as 7⁸ + 8 + 6² + 8⁷ + 9⁴ + 4⁴ + 2⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 7868893 and 7868902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1967234 + ... + 1967237.

It is an arithmetic number, because the mean of its divisors is an integer number (2950854).

Almost surely, 2^7868942 is an apocalyptic number.

7868942 is a deficient number, since it is larger than the sum of its proper divisors (3934474).

7868942 is a wasteful number, since it uses less digits than its factorization.

7868942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934473.

The product of its digits is 193536, while the sum is 44.

The square root of 7868942 is about 2805.1634533481. The cubic root of 7868942 is about 198.9018311624.

The spelling of 7868942 in words is "seven million, eight hundred sixty-eight thousand, nine hundred forty-two".