8442156 has 48 divisors (see below), whose sum is σ = 21109760. Its totient is φ = 2617920.

The previous prime is 8442151. The next prime is 8442157. The reversal of 8442156 is 6512448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13605 + ... + 14211.

Almost surely, 2^8442156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8442156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10554880).

8442156 is an abundant number, since it is smaller than the sum of its proper divisors (12667604).

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

8442156 is a wasteful number, since it uses less digits than its factorization.

8442156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 692 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 8442156 is about 2905.5388484754. The cubic root of 8442156 is about 203.6187612577.

The spelling of 8442156 in words is "eight million, four hundred forty-two thousand, one hundred fifty-six".