42134925869 has 2 divisors, whose sum is σ = 42134925870. Its totient is φ = 42134925868.

The previous prime is 42134925841. The next prime is 42134925881. The reversal of 42134925869 is 96852943124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25860820969 + 16274104900 = 160813^2 + 127570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42134925869 is a prime.

It is a super-2 number, since 2×42134925869² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42134925869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42134925769) 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, 21067462934 + 21067462935.

It is an arithmetic number, because the mean of its divisors is an integer number (21067462935).

Almost surely, 2^42134925869 is an apocalyptic number.

It is an amenable number.

42134925869 is a deficient number, since it is larger than the sum of its proper divisors (1).

42134925869 is an equidigital number, since it uses as much as digits as its factorization.

42134925869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 53.

The spelling of 42134925869 in words is "forty-two billion, one hundred thirty-four million, nine hundred twenty-five thousand, eight hundred sixty-nine".