8242856437 has 4 divisors (see below), whose sum is σ = 8290503180. Its totient is φ = 8195209696.

The previous prime is 8242856417. The next prime is 8242856443. The reversal of 8242856437 is 7346582428.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7452178276 + 790678161 = 86326^2 + 28119^2 .

It is a cyclic number.

It is not a de Polignac number, because 8242856437 - 2⁷ = 8242856309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8242856417) 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, 23823112 + ... + 23823457.

It is an arithmetic number, because the mean of its divisors is an integer number (2072625795).

Almost surely, 2^8242856437 is an apocalyptic number.

It is an amenable number.

8242856437 is a deficient number, since it is larger than the sum of its proper divisors (47646743).

8242856437 is a wasteful number, since it uses less digits than its factorization.

8242856437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47646742.

The product of its digits is 2580480, while the sum is 49.

The square root of 8242856437 is about 90790.1780866190. The cubic root of 8242856437 is about 2020.0366327540.

The spelling of 8242856437 in words is "eight billion, two hundred forty-two million, eight hundred fifty-six thousand, four hundred thirty-seven".