420420103 has 4 divisors (see below), whose sum is σ = 422743048. Its totient is φ = 418097160.

The previous prime is 420420101. The next prime is 420420127. The reversal of 420420103 is 301024024.

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 420420103 - 2¹ = 420420101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420420101) 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, 1161201 + ... + 1161562.

It is an arithmetic number, because the mean of its divisors is an integer number (105685762).

Almost surely, 2^420420103 is an apocalyptic number.

420420103 is a deficient number, since it is larger than the sum of its proper divisors (2322945).

420420103 is a wasteful number, since it uses less digits than its factorization.

420420103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322944.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420420103 is about 20504.1484339145. The cubic root of 420420103 is about 749.1368458157.

Adding to 420420103 its reverse (301024024), we get a palindrome (721444127).

The spelling of 420420103 in words is "four hundred twenty million, four hundred twenty thousand, one hundred three".