8257247442 has 48 divisors (see below), whose sum is σ = 18089630208. Its totient is φ = 2721982560.

The previous prime is 8257247441. The next prime is 8257247443. The reversal of 8257247442 is 2447427528.

8257247442 is a `hidden beast` number, since 8 + 2 + 572 + 4 + 74 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (8257247441) and next prime (8257247443).

It is not an unprimeable number, because it can be changed into a prime (8257247441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587833 + ... + 601715.

It is an arithmetic number, because the mean of its divisors is an integer number (376867296).

Almost surely, 2^8257247442 is an apocalyptic number.

8257247442 is an abundant number, since it is smaller than the sum of its proper divisors (9832382766).

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

8257247442 is a wasteful number, since it uses less digits than its factorization.

8257247442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14255 (or 14252 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 45.

The square root of 8257247442 is about 90869.3977200245. The cubic root of 8257247442 is about 2021.2115270861.

The spelling of 8257247442 in words is "eight billion, two hundred fifty-seven million, two hundred forty-seven thousand, four hundred forty-two".