7863842 has 8 divisors (see below), whose sum is σ = 13480896. Its totient is φ = 3370212.

The previous prime is 7863833. The next prime is 7863851. The reversal of 7863842 is 2483687.

It is an interprime number because it is at equal distance from previous prime (7863833) and next prime (7863851).

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

It is a super-2 number, since 2×7863842² = 123680022001928, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁸ + 8 + 6⁴ + 3² + 8³ + 4³ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 7863796 and 7863805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280838 + ... + 280865.

It is an arithmetic number, because the mean of its divisors is an integer number (1685112).

Almost surely, 2^7863842 is an apocalyptic number.

7863842 is a deficient number, since it is larger than the sum of its proper divisors (5617054).

7863842 is a wasteful number, since it uses less digits than its factorization.

7863842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561712.

The product of its digits is 64512, while the sum is 38.

The square root of 7863842 is about 2804.2542680720. The cubic root of 7863842 is about 198.8588512816.

The spelling of 7863842 in words is "seven million, eight hundred sixty-three thousand, eight hundred forty-two".