42438574489 has 2 divisors, whose sum is σ = 42438574490. Its totient is φ = 42438574488.

The previous prime is 42438574487. The next prime is 42438574501. The reversal of 42438574489 is 98447583424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27132678400 + 15305896089 = 164720^2 + 123717^2 .

It is a cyclic number.

It is not a de Polignac number, because 42438574489 - 2¹ = 42438574487 is a prime.

It is a super-2 number, since 2×42438574489² (a number of 22 digits) contains 22 as substring.

Together with 42438574487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42438574481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21219287244 + 21219287245.

It is an arithmetic number, because the mean of its divisors is an integer number (21219287245).

Almost surely, 2^42438574489 is an apocalyptic number.

It is an amenable number.

42438574489 is a deficient number, since it is larger than the sum of its proper divisors (1).

42438574489 is an equidigital number, since it uses as much as digits as its factorization.

42438574489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30965760, while the sum is 58.

The spelling of 42438574489 in words is "forty-two billion, four hundred thirty-eight million, five hundred seventy-four thousand, four hundred eighty-nine".