420010403 has 4 divisors (see below), whose sum is σ = 420282408. Its totient is φ = 419738400.

The previous prime is 420010387. The next prime is 420010441. The reversal of 420010403 is 304010024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420010403 - 2⁴ = 420010387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420010603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133673 + ... + 136778.

It is an arithmetic number, because the mean of its divisors is an integer number (105070602).

Almost surely, 2^420010403 is an apocalyptic number.

420010403 is a deficient number, since it is larger than the sum of its proper divisors (272005).

420010403 is a wasteful number, since it uses less digits than its factorization.

420010403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272004.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 420010403 is about 20494.1553375590. The cubic root of 420010403 is about 748.8934217454.

Adding to 420010403 its reverse (304010024), we get a palindrome (724020427).

The spelling of 420010403 in words is "four hundred twenty million, ten thousand, four hundred three".