421198733 has 2 divisors, whose sum is σ = 421198734. Its totient is φ = 421198732.

The previous prime is 421198711. The next prime is 421198753. The reversal of 421198733 is 337891124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353515204 + 67683529 = 18802^2 + 8227^2 .

It is a cyclic number.

It is not a de Polignac number, because 421198733 - 2²² = 417004429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421198703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210599366 + 210599367.

It is an arithmetic number, because the mean of its divisors is an integer number (210599367).

Almost surely, 2^421198733 is an apocalyptic number.

It is an amenable number.

421198733 is a deficient number, since it is larger than the sum of its proper divisors (1).

421198733 is an equidigital number, since it uses as much as digits as its factorization.

421198733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 421198733 is about 20523.1267841915. The cubic root of 421198733 is about 749.5990348593.

The spelling of 421198733 in words is "four hundred twenty-one million, one hundred ninety-eight thousand, seven hundred thirty-three".