2120430401 has 4 divisors (see below), whose sum is σ = 2120547204. Its totient is φ = 2120313600.

The previous prime is 2120430397. The next prime is 2120430437. The reversal of 2120430401 is 1040340212.

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 can be written as a sum of positive squares in 2 ways, for example, as 1021441600 + 1098988801 = 31960^2 + 33151^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120430401 - 2² = 2120430397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120430401.

It is not an unprimeable number, because it can be changed into a prime (2120430601) 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, 24680 + ... + 69641.

It is an arithmetic number, because the mean of its divisors is an integer number (530136801).

Almost surely, 2^2120430401 is an apocalyptic number.

It is an amenable number.

2120430401 is a deficient number, since it is larger than the sum of its proper divisors (116803).

2120430401 is an equidigital number, since it uses as much as digits as its factorization.

2120430401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116802.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2120430401 is about 46048.1313518801. The cubic root of 2120430401 is about 1284.7185868536.

Adding to 2120430401 its reverse (1040340212), we get a palindrome (3160770613).

The spelling of 2120430401 in words is "two billion, one hundred twenty million, four hundred thirty thousand, four hundred one".