42436749269 has 2 divisors, whose sum is σ = 42436749270. Its totient is φ = 42436749268.

The previous prime is 42436749259. The next prime is 42436749293. The reversal of 42436749269 is 96294763424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42413343025 + 23406244 = 205945^2 + 4838^2 .

It is a cyclic number.

It is not a de Polignac number, because 42436749269 - 2⁸ = 42436749013 is a prime.

It is a super-2 number, since 2×42436749269² (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 (42436749259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218374634 + 21218374635.

It is an arithmetic number, because the mean of its divisors is an integer number (21218374635).

Almost surely, 2^42436749269 is an apocalyptic number.

It is an amenable number.

42436749269 is a deficient number, since it is larger than the sum of its proper divisors (1).

42436749269 is an equidigital number, since it uses as much as digits as its factorization.

42436749269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 56.

The spelling of 42436749269 in words is "forty-two billion, four hundred thirty-six million, seven hundred forty-nine thousand, two hundred sixty-nine".