42501260069 has 2 divisors, whose sum is σ = 42501260070. Its totient is φ = 42501260068.

The previous prime is 42501260017. The next prime is 42501260083. The reversal of 42501260069 is 96006210524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29023211044 + 13478049025 = 170362^2 + 116095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42501260069 is a prime.

It is a super-2 number, since 2×42501260069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42501200069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250630034 + 21250630035.

It is an arithmetic number, because the mean of its divisors is an integer number (21250630035).

Almost surely, 2^42501260069 is an apocalyptic number.

It is an amenable number.

42501260069 is a deficient number, since it is larger than the sum of its proper divisors (1).

42501260069 is an equidigital number, since it uses as much as digits as its factorization.

42501260069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 42501260069 in words is "forty-two billion, five hundred one million, two hundred sixty thousand, sixty-nine".