421202533 has 2 divisors, whose sum is σ = 421202534. Its totient is φ = 421202532.

The previous prime is 421202521. The next prime is 421202569. The reversal of 421202533 is 335202124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369908289 + 51294244 = 19233^2 + 7162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421202533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421202333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210601266 + 210601267.

It is an arithmetic number, because the mean of its divisors is an integer number (210601267).

Almost surely, 2^421202533 is an apocalyptic number.

It is an amenable number.

421202533 is a deficient number, since it is larger than the sum of its proper divisors (1).

421202533 is an equidigital number, since it uses as much as digits as its factorization.

421202533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 421202533 is about 20523.2193624685. The cubic root of 421202533 is about 749.6012891141.

Adding to 421202533 its reverse (335202124), we get a palindrome (756404657).

The spelling of 421202533 in words is "four hundred twenty-one million, two hundred two thousand, five hundred thirty-three".