42101423129 has 2 divisors, whose sum is σ = 42101423130. Its totient is φ = 42101423128.

The previous prime is 42101423059. The next prime is 42101423141. The reversal of 42101423129 is 92132410124.

42101423129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42085701904 + 15721225 = 205148^2 + 3965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42101423129 is a prime.

It is not a weakly prime, because it can be changed into another prime (42101423149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050711564 + 21050711565.

It is an arithmetic number, because the mean of its divisors is an integer number (21050711565).

Almost surely, 2^42101423129 is an apocalyptic number.

It is an amenable number.

42101423129 is a deficient number, since it is larger than the sum of its proper divisors (1).

42101423129 is an equidigital number, since it uses as much as digits as its factorization.

42101423129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 42101423129 in words is "forty-two billion, one hundred one million, four hundred twenty-three thousand, one hundred twenty-nine".