421041133 has 2 divisors, whose sum is σ = 421041134. Its totient is φ = 421041132.

The previous prime is 421041119. The next prime is 421041149. The reversal of 421041133 is 331140124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238331844 + 182709289 = 15438^2 + 13517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421041133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421041133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421041113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210520566 + 210520567.

It is an arithmetic number, because the mean of its divisors is an integer number (210520567).

Almost surely, 2^421041133 is an apocalyptic number.

It is an amenable number.

421041133 is a deficient number, since it is larger than the sum of its proper divisors (1).

421041133 is an equidigital number, since it uses as much as digits as its factorization.

421041133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 421041133 is about 20519.2868540795. The cubic root of 421041133 is about 749.5055306643.

Adding to 421041133 its reverse (331140124), we get a palindrome (752181257).

The spelling of 421041133 in words is "four hundred twenty-one million, forty-one thousand, one hundred thirty-three".