420120103 has 4 divisors (see below), whose sum is σ = 452437048. Its totient is φ = 387803160.

The previous prime is 420120097. The next prime is 420120137. The reversal of 420120103 is 301021024.

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 420120103 - 2⁹ = 420119591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 32316931 = 420120103 / (4 + 2 + 0 + 1 + 2 + 0 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420120143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16158453 + ... + 16158478.

It is an arithmetic number, because the mean of its divisors is an integer number (113109262).

Almost surely, 2^420120103 is an apocalyptic number.

420120103 is a deficient number, since it is larger than the sum of its proper divisors (32316945).

420120103 is a wasteful number, since it uses less digits than its factorization.

420120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32316944.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 420120103 is about 20496.8315356301. The cubic root of 420120103 is about 748.9586157314.

Adding to 420120103 its reverse (301021024), we get a palindrome (721141127).

The spelling of 420120103 in words is "four hundred twenty million, one hundred twenty thousand, one hundred three".