7421144 has 8 divisors (see below), whose sum is σ = 13914660. Its totient is φ = 3710568.

The previous prime is 7421143. The next prime is 7421173. The reversal of 7421144 is 4411247.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463814 + ... + 463829.

Almost surely, 2^7421144 is an apocalyptic number.

It is an amenable number.

7421144 is a deficient number, since it is larger than the sum of its proper divisors (6493516).

7421144 is a wasteful number, since it uses less digits than its factorization.

7421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927649 (or 927645 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 7421144 is about 2724.1776740881. The cubic root of 7421144 is about 195.0549395932.

It can be divided in two parts, 742 and 1144, that multiplied together give a palindrome (848848).

The spelling of 7421144 in words is "seven million, four hundred twenty-one thousand, one hundred forty-four".