42650120443261 has 2 divisors, whose sum is σ = 42650120443262. Its totient is φ = 42650120443260.

The previous prime is 42650120443169. The next prime is 42650120443267. The reversal of 42650120443261 is 16234402105624.

42650120443261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42414206239161 + 235914204100 = 6512619^2 + 485710^2 .

It is a cyclic number.

It is not a de Polignac number, because 42650120443261 - 2⁹ = 42650120442749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42650120443267) 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, 21325060221630 + 21325060221631.

It is an arithmetic number, because the mean of its divisors is an integer number (21325060221631).

Almost surely, 2^{42650120443261} is an apocalyptic number.

It is an amenable number.

42650120443261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42650120443261 is an equidigital number, since it uses as much as digits as its factorization.

42650120443261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 42650120443261 its reverse (16234402105624), we get a palindrome (58884522548885).

The spelling of 42650120443261 in words is "forty-two trillion, six hundred fifty billion, one hundred twenty million, four hundred forty-three thousand, two hundred sixty-one".