20242505123 has 2 divisors, whose sum is σ = 20242505124. Its totient is φ = 20242505122.

The previous prime is 20242504991. The next prime is 20242505203. The reversal of 20242505123 is 32150524202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242505123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20242505092 and 20242505101.

It is not a weakly prime, because it can be changed into another prime (20242525123) 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 as a sum of consecutive naturals, namely, 10121252561 + 10121252562.

It is an arithmetic number, because the mean of its divisors is an integer number (10121252562).

Almost surely, 2^20242505123 is an apocalyptic number.

20242505123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242505123 is an equidigital number, since it uses as much as digits as its factorization.

20242505123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20242505123 in words is "twenty billion, two hundred forty-two million, five hundred five thousand, one hundred twenty-three".