42162056009 has 2 divisors, whose sum is σ = 42162056010. Its totient is φ = 42162056008.

The previous prime is 42162055973. The next prime is 42162056051. The reversal of 42162056009 is 90065026124.

It is a happy number.

42162056009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38035920784 + 4126135225 = 195028^2 + 64235^2 .

It is a cyclic number.

It is not a de Polignac number, because 42162056009 - 2¹⁶ = 42161990473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42162056009.

It is not a weakly prime, because it can be changed into another prime (42162058009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21081028004 + 21081028005.

It is an arithmetic number, because the mean of its divisors is an integer number (21081028005).

Almost surely, 2^42162056009 is an apocalyptic number.

It is an amenable number.

42162056009 is a deficient number, since it is larger than the sum of its proper divisors (1).

42162056009 is an equidigital number, since it uses as much as digits as its factorization.

42162056009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 42162056009 in words is "forty-two billion, one hundred sixty-two million, fifty-six thousand, nine".