1232544340 has 24 divisors (see below), whose sum is σ = 2589422472. Its totient is φ = 492812160.

The previous prime is 1232544329. The next prime is 1232544343. The reversal of 1232544340 is 434452321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54819216 + 1177725124 = 7404^2 + 34318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1232544299 and 1232544308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232544343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42030 + ... + 65050.

It is an arithmetic number, because the mean of its divisors is an integer number (107892603).

Almost surely, 2^1232544340 is an apocalyptic number.

1232544340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232544340 is an abundant number, since it is smaller than the sum of its proper divisors (1356878132).

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

1232544340 is a wasteful number, since it uses less digits than its factorization.

1232544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25707 (or 25705 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 1232544340 is about 35107.6108557674. The cubic root of 1232544340 is about 1072.1795443035.

Adding to 1232544340 its reverse (434452321), we get a palindrome (1666996661).

It can be divided in two parts, 12325 and 44340, that added together give a palindrome (56665).

The spelling of 1232544340 in words is "one billion, two hundred thirty-two million, five hundred forty-four thousand, three hundred forty".