20242042451 has 2 divisors, whose sum is σ = 20242042452. Its totient is φ = 20242042450.

The previous prime is 20242042363. The next prime is 20242042459. The reversal of 20242042451 is 15424024202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242042451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20242042451.

It is not a weakly prime, because it can be changed into another prime (20242042459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121021225 + 10121021226.

It is an arithmetic number, because the mean of its divisors is an integer number (10121021226).

Almost surely, 2^20242042451 is an apocalyptic number.

20242042451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242042451 is an equidigital number, since it uses as much as digits as its factorization.

20242042451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 20242042451 its reverse (15424024202), we get a palindrome (35666066653).

The spelling of 20242042451 in words is "twenty billion, two hundred forty-two million, forty-two thousand, four hundred fifty-one".