1243132204020 has 240 divisors, whose sum is σ = 4080001493568. Its totient is φ = 282790932480.

The previous prime is 1243132204007. The next prime is 1243132204031. The reversal of 1243132204020 is 204022313421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 30376212 + ... + 30417108.

Almost surely, 2^{1243132204020} is an apocalyptic number.

1243132204020 is a gapful number since it is divisible by the number (10) 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 1243132204020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2040000746784).

1243132204020 is an abundant number, since it is smaller than the sum of its proper divisors (2836869289548).

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

1243132204020 is a wasteful number, since it uses less digits than its factorization.

1243132204020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41148 (or 41125 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1243132204020 its reverse (204022313421), we get a palindrome (1447154517441).

The spelling of 1243132204020 in words is "one trillion, two hundred forty-three billion, one hundred thirty-two million, two hundred four thousand, twenty".