2120442403 has 4 divisors (see below), whose sum is σ = 2120551920. Its totient is φ = 2120332888.

The previous prime is 2120442383. The next prime is 2120442437. The reversal of 2120442403 is 3042440212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2120442403 - 2⁹ = 2120441891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120412403) 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, 17068 + ... + 67321.

It is an arithmetic number, because the mean of its divisors is an integer number (530137980).

Almost surely, 2^2120442403 is an apocalyptic number.

2120442403 is a deficient number, since it is larger than the sum of its proper divisors (109517).

2120442403 is an equidigital number, since it uses as much as digits as its factorization.

2120442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109516.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2120442403 is about 46048.2616718590. The cubic root of 2120442403 is about 1284.7210107582.

Adding to 2120442403 its reverse (3042440212), we get a palindrome (5162882615).

The spelling of 2120442403 in words is "two billion, one hundred twenty million, four hundred forty-two thousand, four hundred three".