42248442569 has 2 divisors, whose sum is σ = 42248442570. Its totient is φ = 42248442568.

The previous prime is 42248442553. The next prime is 42248442583. The reversal of 42248442569 is 96524484224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32820032569 + 9428410000 = 181163^2 + 97100^2 .

It is a cyclic number.

It is not a de Polignac number, because 42248442569 - 2⁴ = 42248442553 is a prime.

It is a super-2 number, since 2×42248442569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42248444569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21124221284 + 21124221285.

It is an arithmetic number, because the mean of its divisors is an integer number (21124221285).

Almost surely, 2^42248442569 is an apocalyptic number.

It is an amenable number.

42248442569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42248442569 is an equidigital number, since it uses as much as digits as its factorization.

42248442569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4423680, while the sum is 50.

The spelling of 42248442569 in words is "forty-two billion, two hundred forty-eight million, four hundred forty-two thousand, five hundred sixty-nine".