42012235513 has 2 divisors, whose sum is σ = 42012235514. Its totient is φ = 42012235512.

The previous prime is 42012235487. The next prime is 42012235523. The reversal of 42012235513 is 31553221024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41800620304 + 211615209 = 204452^2 + 14547^2 .

It is a cyclic number.

It is not a de Polignac number, because 42012235513 - 2⁵ = 42012235481 is a prime.

It is not a weakly prime, because it can be changed into another prime (42012235523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006117756 + 21006117757.

It is an arithmetic number, because the mean of its divisors is an integer number (21006117757).

Almost surely, 2^42012235513 is an apocalyptic number.

It is an amenable number.

42012235513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012235513 is an equidigital number, since it uses as much as digits as its factorization.

42012235513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 42012235513 its reverse (31553221024), we get a palindrome (73565456537).

The spelling of 42012235513 in words is "forty-two billion, twelve million, two hundred thirty-five thousand, five hundred thirteen".