7142544 has 60 divisors (see below), whose sum is σ = 20170956. Its totient is φ = 2359296.

The previous prime is 7142521. The next prime is 7142557. The reversal of 7142544 is 4452417.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 2214144 = 2220^2 + 1488^2 .

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, 27664 + ... + 27920.

Almost surely, 2^7142544 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 7142544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10085478).

7142544 is an abundant number, since it is smaller than the sum of its proper divisors (13028412).

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

7142544 is a wasteful number, since it uses less digits than its factorization.

7142544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 455 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 7142544 is about 2672.5538348179. The cubic root of 7142544 is about 192.5828641956.

The spelling of 7142544 in words is "seven million, one hundred forty-two thousand, five hundred forty-four".