421264133 has 2 divisors, whose sum is σ = 421264134. Its totient is φ = 421264132.

The previous prime is 421264099. The next prime is 421264147. The reversal of 421264133 is 331462124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363169249 + 58094884 = 19057^2 + 7622^2 .

It is a cyclic number.

It is not a de Polignac number, because 421264133 - 2¹⁰ = 421263109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421264433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210632066 + 210632067.

It is an arithmetic number, because the mean of its divisors is an integer number (210632067).

Almost surely, 2^421264133 is an apocalyptic number.

It is an amenable number.

421264133 is a deficient number, since it is larger than the sum of its proper divisors (1).

421264133 is an equidigital number, since it uses as much as digits as its factorization.

421264133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 421264133 is about 20524.7200468118. The cubic root of 421264133 is about 749.6378298793.

The spelling of 421264133 in words is "four hundred twenty-one million, two hundred sixty-four thousand, one hundred thirty-three".