7140144 has 40 divisors (see below), whose sum is σ = 20123712. Its totient is φ = 2163520.

The previous prime is 7140127. The next prime is 7140157. The reversal of 7140144 is 4410417.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7140144.

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, 6234 + ... + 7289.

Almost surely, 2^7140144 is an apocalyptic number.

It is an amenable number.

7140144 is an abundant number, since it is smaller than the sum of its proper divisors (12983568).

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

7140144 is a wasteful number, since it uses less digits than its factorization.

7140144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13545 (or 13539 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 7140144 is about 2672.1047883644. The cubic root of 7140144 is about 192.5612915527.

The spelling of 7140144 in words is "seven million, one hundred forty thousand, one hundred forty-four".