7142644 has 24 divisors (see below), whose sum is σ = 12928608. Its totient is φ = 3450720.

The previous prime is 7142633. The next prime is 7142659. The reversal of 7142644 is 4462417.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22374 + ... + 22690.

It is an arithmetic number, because the mean of its divisors is an integer number (538692).

Almost surely, 2^7142644 is an apocalyptic number.

It is an amenable number.

7142644 is a deficient number, since it is larger than the sum of its proper divisors (5785964).

7142644 is a wasteful number, since it uses less digits than its factorization.

7142644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 493 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 7142644 is about 2672.5725434495. The cubic root of 7142644 is about 192.5837629508.

The spelling of 7142644 in words is "seven million, one hundred forty-two thousand, six hundred forty-four".