421303429 has 2 divisors, whose sum is σ = 421303430. Its totient is φ = 421303428.

The previous prime is 421303417. The next prime is 421303481. The reversal of 421303429 is 924303124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389154529 + 32148900 = 19727^2 + 5670^2 .

It is a cyclic number.

It is not a de Polignac number, because 421303429 - 2¹⁹ = 420779141 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421303397 and 421303406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421303409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210651714 + 210651715.

It is an arithmetic number, because the mean of its divisors is an integer number (210651715).

Almost surely, 2^421303429 is an apocalyptic number.

It is an amenable number.

421303429 is a deficient number, since it is larger than the sum of its proper divisors (1).

421303429 is an equidigital number, since it uses as much as digits as its factorization.

421303429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 421303429 is about 20525.6773091657. The cubic root of 421303429 is about 749.6611381792.

The spelling of 421303429 in words is "four hundred twenty-one million, three hundred three thousand, four hundred twenty-nine".