1234532440 has 32 divisors (see below), whose sum is σ = 2779220160. Its totient is φ = 493542400.

The previous prime is 1234532389. The next prime is 1234532441. The reversal of 1234532440 is 442354321.

It is a happy number.

1234532440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1234532399 and 1234532408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234532441) 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, 75825 + ... + 90655.

It is an arithmetic number, because the mean of its divisors is an integer number (86850630).

Almost surely, 2^1234532440 is an apocalyptic number.

1234532440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234532440 is an abundant number, since it is smaller than the sum of its proper divisors (1544687720).

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

1234532440 is a wasteful number, since it uses less digits than its factorization.

1234532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923 (or 16919 counting only the distinct ones).

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

The square root of 1234532440 is about 35135.9138204772. The cubic root of 1234532440 is about 1072.7557115631.

Adding to 1234532440 its reverse (442354321), we get a palindrome (1676886761).

The spelling of 1234532440 in words is "one billion, two hundred thirty-four million, five hundred thirty-two thousand, four hundred forty".