42364266521 has 2 divisors, whose sum is σ = 42364266522. Its totient is φ = 42364266520.

The previous prime is 42364266517. The next prime is 42364266557. The reversal of 42364266521 is 12566246324.

42364266521 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., 23611702921 + 18752563600 = 153661^2 + 136940^2 .

It is a cyclic number.

It is not a de Polignac number, because 42364266521 - 2² = 42364266517 is a prime.

It is not a weakly prime, because it can be changed into another prime (42364266221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21182133260 + 21182133261.

It is an arithmetic number, because the mean of its divisors is an integer number (21182133261).

Almost surely, 2^42364266521 is an apocalyptic number.

It is an amenable number.

42364266521 is a deficient number, since it is larger than the sum of its proper divisors (1).

42364266521 is an equidigital number, since it uses as much as digits as its factorization.

42364266521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 41.

The spelling of 42364266521 in words is "forty-two billion, three hundred sixty-four million, two hundred sixty-six thousand, five hundred twenty-one".