421412347 has 2 divisors, whose sum is σ = 421412348. Its totient is φ = 421412346.

The previous prime is 421412333. The next prime is 421412377. The reversal of 421412347 is 743214124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421412347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421412377) 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, 210706173 + 210706174.

It is an arithmetic number, because the mean of its divisors is an integer number (210706174).

Almost surely, 2^421412347 is an apocalyptic number.

421412347 is a deficient number, since it is larger than the sum of its proper divisors (1).

421412347 is an equidigital number, since it uses as much as digits as its factorization.

421412347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 421412347 is about 20528.3303510052. The cubic root of 421412347 is about 749.7257349764.

It can be divided in two parts, 4214 and 12347, that added together give a palindrome (16561).

The spelling of 421412347 in words is "four hundred twenty-one million, four hundred twelve thousand, three hundred forty-seven".