7121232 has 60 divisors (see below), whose sum is σ = 21109140. Its totient is φ = 2233344.

The previous prime is 7121209. The next prime is 7121263. The reversal of 7121232 is 2321217.

It can be written as a sum of positive squares in 2 ways, for example, as 5875776 + 1245456 = 2424^2 + 1116^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 994 + ... + 3902.

It is an arithmetic number, because the mean of its divisors is an integer number (351819).

Almost surely, 2^7121232 is an apocalyptic number.

7121232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7121232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10554570).

7121232 is an abundant number, since it is smaller than the sum of its proper divisors (13987908).

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

7121232 is a wasteful number, since it uses less digits than its factorization.

7121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2931 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 7121232 is about 2668.5636585999. The cubic root of 7121232 is about 192.3911297585.

Adding to 7121232 its reverse (2321217), we get a palindrome (9442449).

The spelling of 7121232 in words is "seven million, one hundred twenty-one thousand, two hundred thirty-two".