420332003 has 64 divisors (see below), whose sum is σ = 575769600. Its totient is φ = 297561600.

The previous prime is 420331991. The next prime is 420332023. The reversal of 420332003 is 300233024.

It is a Cunningham number, because it is equal to 20502²-1.

It is not a de Polignac number, because 420332003 - 2⁶ = 420331939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420332023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4161653 + ... + 4161753.

It is an arithmetic number, because the mean of its divisors is an integer number (8996400).

Almost surely, 2^420332003 is an apocalyptic number.

420332003 is a deficient number, since it is larger than the sum of its proper divisors (155437597).

420332003 is a wasteful number, since it uses less digits than its factorization.

420332003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 420332003 is about 20501.9999756121. Note that the first 4 decimals coincide. The cubic root of 420332003 is about 749.0845143769.

Adding to 420332003 its reverse (300233024), we get a palindrome (720565027).

The spelling of 420332003 in words is "four hundred twenty million, three hundred thirty-two thousand, three".