7856445342 has 8 divisors (see below), whose sum is σ = 15712890696. Its totient is φ = 2618815112.

The previous prime is 7856445319. The next prime is 7856445343. The reversal of 7856445342 is 2435446587.

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

7856445342 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7856445291 and 7856445300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7856445343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654703773 + ... + 654703784.

It is an arithmetic number, because the mean of its divisors is an integer number (1964111337).

Almost surely, 2^7856445342 is an apocalyptic number.

7856445342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7856445342 is a wasteful number, since it uses less digits than its factorization.

7856445342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309407562.

The product of its digits is 3225600, while the sum is 48.

The square root of 7856445342 is about 88636.5914394275. The cubic root of 7856445342 is about 1987.9648344987.

The spelling of 7856445342 in words is "seven billion, eight hundred fifty-six million, four hundred forty-five thousand, three hundred forty-two".