420121103 has 4 divisors (see below), whose sum is σ = 442232760. Its totient is φ = 398009448.

The previous prime is 420121087. The next prime is 420121157. The reversal of 420121103 is 301121024.

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 420121103 - 2⁴ = 420121087 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 (420121003) 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, 11055800 + ... + 11055837.

It is an arithmetic number, because the mean of its divisors is an integer number (110558190).

Almost surely, 2^420121103 is an apocalyptic number.

420121103 is a deficient number, since it is larger than the sum of its proper divisors (22111657).

420121103 is a wasteful number, since it uses less digits than its factorization.

420121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111656.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 420121103 is about 20496.8559296298. The cubic root of 420121103 is about 748.9592099726.

Adding to 420121103 its reverse (301121024), we get a palindrome (721242127).

The spelling of 420121103 in words is "four hundred twenty million, one hundred twenty-one thousand, one hundred three".