421135199 has 2 divisors, whose sum is σ = 421135200. Its totient is φ = 421135198.

The previous prime is 421135189. The next prime is 421135213. The reversal of 421135199 is 991531124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421135199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421135109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210567599 + 210567600.

It is an arithmetic number, because the mean of its divisors is an integer number (210567600).

Almost surely, 2^421135199 is an apocalyptic number.

421135199 is a deficient number, since it is larger than the sum of its proper divisors (1).

421135199 is an equidigital number, since it uses as much as digits as its factorization.

421135199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 421135199 is about 20521.5788622611. The cubic root of 421135199 is about 749.5613428974.

The spelling of 421135199 in words is "four hundred twenty-one million, one hundred thirty-five thousand, one hundred ninety-nine".