20124020404087 has 2 divisors, whose sum is σ = 20124020404088. Its totient is φ = 20124020404086.

The previous prime is 20124020404003. The next prime is 20124020404129. The reversal of 20124020404087 is 78040402042102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20124020404087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124020404487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062010202043 + 10062010202044.

It is an arithmetic number, because the mean of its divisors is an integer number (10062010202044).

Almost surely, 2^{20124020404087} is an apocalyptic number.

20124020404087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124020404087 is an equidigital number, since it uses as much as digits as its factorization.

20124020404087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 34.

Adding to 20124020404087 its reverse (78040402042102), we get a palindrome (98164422446189).

The spelling of 20124020404087 in words is "twenty trillion, one hundred twenty-four billion, twenty million, four hundred four thousand, eighty-seven".