7866342 has 128 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 2073600.

The previous prime is 7866329. The next prime is 7866347. The reversal of 7866342 is 2436687.

7866342 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 7⁸ + 8 + 6 + 6² + 3⁵ + 4⁶ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 7866297 and 7866306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7866347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191842 + ... + 191882.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^7866342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7866342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

7866342 is an abundant number, since it is smaller than the sum of its proper divisors (13906458).

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

7866342 is a wasteful number, since it uses less digits than its factorization.

7866342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 93 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 7866342 is about 2804.6999839555. The cubic root of 7866342 is about 198.8799221718.

The spelling of 7866342 in words is "seven million, eight hundred sixty-six thousand, three hundred forty-two".