8423657142 has 16 divisors (see below), whose sum is σ = 17098767552. Its totient is φ = 2765976840.

The previous prime is 8423657113. The next prime is 8423657191. The reversal of 8423657142 is 2417563248.

It is a junction number, because it is equal to n+sod(n) for n = 8423657094 and 8423657103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10476784 + ... + 10477587.

It is an arithmetic number, because the mean of its divisors is an integer number (1068672972).

Almost surely, 2^8423657142 is an apocalyptic number.

8423657142 is an abundant number, since it is smaller than the sum of its proper divisors (8675110410).

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

8423657142 is a wasteful number, since it uses less digits than its factorization.

8423657142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20954443.

The product of its digits is 322560, while the sum is 42.

The square root of 8423657142 is about 91780.4834482800. The cubic root of 8423657142 is about 2034.6992608762.

The spelling of 8423657142 in words is "eight billion, four hundred twenty-three million, six hundred fifty-seven thousand, one hundred forty-two".