7421232 has 80 divisors (see below), whose sum is σ = 23609600. Its totient is φ = 1956096.

The previous prime is 7421213. The next prime is 7421237. The reversal of 7421232 is 2321247.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 7421199 and 7421208.

It is not an unprimeable number, because it can be changed into a prime (7421237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3519 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (295120).

Almost surely, 2^7421232 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 7421232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11804800).

7421232 is an abundant number, since it is smaller than the sum of its proper divisors (16188368).

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

7421232 is a wasteful number, since it uses less digits than its factorization.

7421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1724 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 7421232 is about 2724.1938257033. The cubic root of 7421232 is about 195.0557105780.

Adding to 7421232 its reverse (2321247), we get a palindrome (9742479).

The spelling of 7421232 in words is "seven million, four hundred twenty-one thousand, two hundred thirty-two".