2123143021240 has 32 divisors (see below), whose sum is σ = 4777378470000. Its totient is φ = 849202689024.

The previous prime is 2123143021231. The next prime is 2123143021247. The reversal of 2123143021240 is 421203413212.

It is a super-2 number, since 2×2123143021240² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123143021247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069950 + ... + 2321869.

Almost surely, 2^{2123143021240} is an apocalyptic number.

2123143021240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123143021240 is an abundant number, since it is smaller than the sum of its proper divisors (2654235448760).

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

2123143021240 is a wasteful number, since it uses less digits than its factorization.

2123143021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407479 (or 3407475 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2123143021240 its reverse (421203413212), we get a palindrome (2544346434452).

The spelling of 2123143021240 in words is "two trillion, one hundred twenty-three billion, one hundred forty-three million, twenty-one thousand, two hundred forty".