42134925769 has 2 divisors, whose sum is σ = 42134925770. Its totient is φ = 42134925768.

The previous prime is 42134925757. The next prime is 42134925773. The reversal of 42134925769 is 96752943124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42049603600 + 85322169 = 205060^2 + 9237^2 .

It is a cyclic number.

It is not a de Polignac number, because 42134925769 - 2¹⁵ = 42134893001 is a prime.

It is a super-2 number, since 2×42134925769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42134925719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21067462884 + 21067462885.

It is an arithmetic number, because the mean of its divisors is an integer number (21067462885).

Almost surely, 2^42134925769 is an apocalyptic number.

It is an amenable number.

42134925769 is a deficient number, since it is larger than the sum of its proper divisors (1).

42134925769 is an equidigital number, since it uses as much as digits as its factorization.

42134925769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The spelling of 42134925769 in words is "forty-two billion, one hundred thirty-four million, nine hundred twenty-five thousand, seven hundred sixty-nine".