8457998742 has 24 divisors (see below), whose sum is σ = 18338725080. Its totient is φ = 2817323520.

The previous prime is 8457998701. The next prime is 8457998761. The reversal of 8457998742 is 2478997548.

It is a self number, because there is not a number n which added to its sum of digits gives 8457998742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141384 + ... + 192107.

It is an arithmetic number, because the mean of its divisors is an integer number (764113545).

Almost surely, 2^8457998742 is an apocalyptic number.

8457998742 is an abundant number, since it is smaller than the sum of its proper divisors (9880726338).

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

8457998742 is a wasteful number, since it uses less digits than its factorization.

8457998742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334908 (or 334905 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The square root of 8457998742 is about 91967.3786839660. The cubic root of 8457998742 is about 2037.4605353090.

The spelling of 8457998742 in words is "eight billion, four hundred fifty-seven million, nine hundred ninety-eight thousand, seven hundred forty-two".