2123242331240 has 32 divisors (see below), whose sum is σ = 5058312614280. Its totient is φ = 799338289152.

The previous prime is 2123242331209. The next prime is 2123242331269. The reversal of 2123242331240 is 421332423212.

It can be written as a sum of positive squares in 4 ways, for example, as 1811947519396 + 311294811844 = 1346086^2 + 557938^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561206917 + ... + 1561208276.

Almost surely, 2^{2123242331240} is an apocalyptic number.

2123242331240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123242331240 is an abundant number, since it is smaller than the sum of its proper divisors (2935070283040).

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

2123242331240 is a wasteful number, since it uses less digits than its factorization.

2123242331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122415221 (or 3122415217 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 2123242331240 its reverse (421332423212), we get a palindrome (2544574754452).

The spelling of 2123242331240 in words is "two trillion, one hundred twenty-three billion, two hundred forty-two million, three hundred thirty-one thousand, two hundred forty".