420322403 has 2 divisors, whose sum is σ = 420322404. Its totient is φ = 420322402.

The previous prime is 420322373. The next prime is 420322411. The reversal of 420322403 is 304223024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420322403 - 2²² = 416128099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (420322003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210161201 + 210161202.

It is an arithmetic number, because the mean of its divisors is an integer number (210161202).

Almost surely, 2^420322403 is an apocalyptic number.

420322403 is a deficient number, since it is larger than the sum of its proper divisors (1).

420322403 is an equidigital number, since it uses as much as digits as its factorization.

420322403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 420322403 is about 20501.7658507749. The cubic root of 420322403 is about 749.0788115308.

Adding to 420322403 its reverse (304223024), we get a palindrome (724545427).

The spelling of 420322403 in words is "four hundred twenty million, three hundred twenty-two thousand, four hundred three".