1243232420032 has 84 divisors (see below), whose sum is σ = 2530255232088. Its totient is φ = 606076825600.

The previous prime is 1243232420009. The next prime is 1243232420033. The reversal of 1243232420032 is 2300242323421.

It is not an unprimeable number, because it can be changed into a prime (1243232420033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259382628 + ... + 259387420.

Almost surely, 2^{1243232420032} 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 1243232420032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265127616044).

1243232420032 is an abundant number, since it is smaller than the sum of its proper divisors (1287022812056).

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

1243232420032 is an equidigital number, since it uses as much as digits as its factorization.

1243232420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298 (or 7247 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 1243232420032 its reverse (2300242323421), we get a palindrome (3543474743453).

The spelling of 1243232420032 in words is "one trillion, two hundred forty-three billion, two hundred thirty-two million, four hundred twenty thousand, thirty-two".