8556742 has 8 divisors (see below), whose sum is σ = 13133736. Its totient is φ = 4178832.

The previous prime is 8556739. The next prime is 8556749. The reversal of 8556742 is 2476558.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556749) 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, 49663 + ... + 49834.

It is an arithmetic number, because the mean of its divisors is an integer number (1641717).

Almost surely, 2^8556742 is an apocalyptic number.

8556742 is a deficient number, since it is larger than the sum of its proper divisors (4576994).

8556742 is a wasteful number, since it uses less digits than its factorization.

8556742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99542.

The product of its digits is 67200, while the sum is 37.

The square root of 8556742 is about 2925.1909339392. The cubic root of 8556742 is about 204.5358684741.

The spelling of 8556742 in words is "eight million, five hundred fifty-six thousand, seven hundred forty-two".