42515521039 has 2 divisors, whose sum is σ = 42515521040. Its totient is φ = 42515521038.

The previous prime is 42515521031. The next prime is 42515521049. The reversal of 42515521039 is 93012551524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42515521039 - 2³ = 42515521031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42515520989 and 42515521007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42515521031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21257760519 + 21257760520.

It is an arithmetic number, because the mean of its divisors is an integer number (21257760520).

Almost surely, 2^42515521039 is an apocalyptic number.

42515521039 is a deficient number, since it is larger than the sum of its proper divisors (1).

42515521039 is an equidigital number, since it uses as much as digits as its factorization.

42515521039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 42515521039 in words is "forty-two billion, five hundred fifteen million, five hundred twenty-one thousand, thirty-nine".