8442212857 has 8 divisors (see below), whose sum is σ = 9384892160. Its totient is φ = 7541430480.

The previous prime is 8442212851. The next prime is 8442212893. The reversal of 8442212857 is 7582122448.

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

It is a cyclic number.

It is not a de Polignac number, because 8442212857 - 2⁷ = 8442212729 is a prime.

It is a super-2 number, since 2×8442212857² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8442212851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10473807 + ... + 10474612.

It is an arithmetic number, because the mean of its divisors is an integer number (1173111520).

Almost surely, 2^8442212857 is an apocalyptic number.

It is an amenable number.

8442212857 is a deficient number, since it is larger than the sum of its proper divisors (942679303).

8442212857 is a wasteful number, since it uses less digits than its factorization.

8442212857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20948463.

The product of its digits is 286720, while the sum is 43.

The square root of 8442212857 is about 91881.5153172824. The cubic root of 8442212857 is about 2036.1921837344.

It can be divided in two parts, 84422 and 12857, that added together give a palindrome (97279).

The spelling of 8442212857 in words is "eight billion, four hundred forty-two million, two hundred twelve thousand, eight hundred fifty-seven".