421430299 has 4 divisors (see below), whose sum is σ = 422919736. Its totient is φ = 419940864.

The previous prime is 421430281. The next prime is 421430327. The reversal of 421430299 is 992034124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421430299 - 2⁷ = 421430171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421430239) 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 in 3 ways as a sum of consecutive naturals, for example, 744294 + ... + 744859.

It is an arithmetic number, because the mean of its divisors is an integer number (105729934).

Almost surely, 2^421430299 is an apocalyptic number.

421430299 is a deficient number, since it is larger than the sum of its proper divisors (1489437).

421430299 is a wasteful number, since it uses less digits than its factorization.

421430299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489436.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 421430299 is about 20528.7675957423. The cubic root of 421430299 is about 749.7363808323.

It can be divided in two parts, 42 and 1430299, that added together give a palindrome (1430341).

The spelling of 421430299 in words is "four hundred twenty-one million, four hundred thirty thousand, two hundred ninety-nine".