420004003 has 2 divisors, whose sum is σ = 420004004. Its totient is φ = 420004002.

The previous prime is 420003973. The next prime is 420004007. The reversal of 420004003 is 300400024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420004003 - 2¹⁷ = 419872931 is a prime.

It is not a weakly prime, because it can be changed into another prime (420004007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210002001 + 210002002.

It is an arithmetic number, because the mean of its divisors is an integer number (210002002).

Almost surely, 2^420004003 is an apocalyptic number.

420004003 is a deficient number, since it is larger than the sum of its proper divisors (1).

420004003 is an equidigital number, since it uses as much as digits as its factorization.

420004003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 420004003 is about 20493.9991948863. Note that the first 3 decimals coincide. The cubic root of 420004003 is about 748.8896179172.

Adding to 420004003 its reverse (300400024), we get a palindrome (720404027).

The spelling of 420004003 in words is "four hundred twenty million, four thousand, three".