20124023243 has 2 divisors, whose sum is σ = 20124023244. Its totient is φ = 20124023242.

The previous prime is 20124023239. The next prime is 20124023251. The reversal of 20124023243 is 34232042102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124023243 - 2² = 20124023239 is a prime.

It is a super-2 number, since 2×20124023243² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20124023233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062011621 + 10062011622.

It is an arithmetic number, because the mean of its divisors is an integer number (10062011622).

Almost surely, 2^20124023243 is an apocalyptic number.

20124023243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124023243 is an equidigital number, since it uses as much as digits as its factorization.

20124023243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20124023243 its reverse (34232042102), we get a palindrome (54356065345).

The spelling of 20124023243 in words is "twenty billion, one hundred twenty-four million, twenty-three thousand, two hundred forty-three".