42515521259 has 2 divisors, whose sum is σ = 42515521260. Its totient is φ = 42515521258.

The previous prime is 42515521231. The next prime is 42515521327. The reversal of 42515521259 is 95212551524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42515521259 - 2⁸ = 42515521003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42515521219) 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, 21257760629 + 21257760630.

It is an arithmetic number, because the mean of its divisors is an integer number (21257760630).

Almost surely, 2^42515521259 is an apocalyptic number.

42515521259 is a deficient number, since it is larger than the sum of its proper divisors (1).

42515521259 is an equidigital number, since it uses as much as digits as its factorization.

42515521259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 41.

The spelling of 42515521259 in words is "forty-two billion, five hundred fifteen million, five hundred twenty-one thousand, two hundred fifty-nine".