421261199 has 2 divisors, whose sum is σ = 421261200. Its totient is φ = 421261198.

The previous prime is 421261193. The next prime is 421261223. The reversal of 421261199 is 991162124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421261199 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421261193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210630599 + 210630600.

It is an arithmetic number, because the mean of its divisors is an integer number (210630600).

Almost surely, 2^421261199 is an apocalyptic number.

421261199 is a deficient number, since it is larger than the sum of its proper divisors (1).

421261199 is an equidigital number, since it uses as much as digits as its factorization.

421261199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 421261199 is about 20524.6485719001. The cubic root of 421261199 is about 749.6360895282.

The spelling of 421261199 in words is "four hundred twenty-one million, two hundred sixty-one thousand, one hundred ninety-nine".