1232542221440 has 32 divisors (see below), whose sum is σ = 2946546249660. Its totient is φ = 493016888320.

The previous prime is 1232542221437. The next prime is 1232542221509. The reversal of 1232542221440 is 441222452321.

It can be written as a sum of positive squares in 2 ways, for example, as 1106653504576 + 125888716864 = 1051976^2 + 354808^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1232542221397 and 1232542221406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962922971 + ... + 962924250.

Almost surely, 2^{1232542221440} is an apocalyptic number.

1232542221440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232542221440 is an abundant number, since it is smaller than the sum of its proper divisors (1714004028220).

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

1232542221440 is an equidigital number, since it uses as much as digits as its factorization.

1232542221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925847240 (or 1925847228 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 1232542221440 its reverse (441222452321), we get a palindrome (1673764673761).

The spelling of 1232542221440 in words is "one trillion, two hundred thirty-two billion, five hundred forty-two million, two hundred twenty-one thousand, four hundred forty".