1243232342220 has 96 divisors (see below), whose sum is σ = 3797702496000. Its totient is φ = 301374357760.

The previous prime is 1243232342203. The next prime is 1243232342221. The reversal of 1243232342220 is 222432323421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1243232342221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18280399 + ... + 18348281.

It is an arithmetic number, because the mean of its divisors is an integer number (39559401000).

Almost surely, 2^{1243232342220} is an apocalyptic number.

1243232342220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243232342220 is an abundant number, since it is smaller than the sum of its proper divisors (2554470153780).

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

1243232342220 is a wasteful number, since it uses less digits than its factorization.

1243232342220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95655 (or 95653 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 1243232342220 its reverse (222432323421), we get a palindrome (1465664665641).

The spelling of 1243232342220 in words is "one trillion, two hundred forty-three billion, two hundred thirty-two million, three hundred forty-two thousand, two hundred twenty".