420402003 has 16 divisors (see below), whose sum is σ = 644157696. Its totient is φ = 238900320.

The previous prime is 420402001. The next prime is 420402023. The reversal of 420402003 is 300204024.

It is a happy number.

It is not a de Polignac number, because 420402003 - 2¹ = 420402001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420402001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51501 + ... + 59102.

It is an arithmetic number, because the mean of its divisors is an integer number (40259856).

Almost surely, 2^420402003 is an apocalyptic number.

420402003 is a deficient number, since it is larger than the sum of its proper divisors (223755693).

420402003 is a wasteful number, since it uses less digits than its factorization.

420402003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110794.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 420402003 is about 20503.7070550669. The cubic root of 420402003 is about 749.1260950045.

Adding to 420402003 its reverse (300204024), we get a palindrome (720606027).

The spelling of 420402003 in words is "four hundred twenty million, four hundred two thousand, three".