620042215423129 has 2 divisors, whose sum is σ = 620042215423130. Its totient is φ = 620042215423128.

The previous prime is 620042215423067. The next prime is 620042215423151. The reversal of 620042215423129 is 921324512240026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618099403176025 + 1942812247104 = 24861605^2 + 1393848^2 .

It is a cyclic number.

It is not a de Polignac number, because 620042215423129 - 2¹⁷ = 620042215292057 is a prime.

It is not a weakly prime, because it can be changed into another prime (620042215420129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310021107711564 + 310021107711565.

It is an arithmetic number, because the mean of its divisors is an integer number (310021107711565).

Almost surely, 2^{620042215423129} is an apocalyptic number.

It is an amenable number.

620042215423129 is a deficient number, since it is larger than the sum of its proper divisors (1).

620042215423129 is an equidigital number, since it uses as much as digits as its factorization.

620042215423129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 620042215423129 in words is "six hundred twenty trillion, forty-two billion, two hundred fifteen million, four hundred twenty-three thousand, one hundred twenty-nine".