7142856 has 128 divisors (see below), whose sum is σ = 22498560. Its totient is φ = 1843200.

The previous prime is 7142851. The next prime is 7142869. The reversal of 7142856 is 6582417.

It is not an unprimeable number, because it can be changed into a prime (7142851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117066 + ... + 117126.

It is an arithmetic number, because the mean of its divisors is an integer number (175770).

Almost surely, 2^7142856 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 7142856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11249280).

7142856 is an abundant number, since it is smaller than the sum of its proper divisors (15355704).

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

7142856 is a wasteful number, since it uses less digits than its factorization.

7142856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 131 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 7142856 is about 2672.6122053152. The cubic root of 7142856 is about 192.5856682842.

It can be divided in two parts, 714 and 2856, that multiplied together give a square (2039184 = 1428²).

The spelling of 7142856 in words is "seven million, one hundred forty-two thousand, eight hundred fifty-six".