2143442401 has 4 divisors (see below), whose sum is σ = 2143989952. Its totient is φ = 2142894852.

The previous prime is 2143442369. The next prime is 2143442417. The reversal of 2143442401 is 1042443412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143442401 - 2⁵ = 2143442369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143442491) 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, 267861 + ... + 275746.

It is an arithmetic number, because the mean of its divisors is an integer number (535997488).

Almost surely, 2^2143442401 is an apocalyptic number.

It is an amenable number.

2143442401 is a deficient number, since it is larger than the sum of its proper divisors (547551).

2143442401 is an equidigital number, since it uses as much as digits as its factorization.

2143442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547550.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2143442401 is about 46297.3260674955. The cubic root of 2143442401 is about 1289.3493505862.

Adding to 2143442401 its reverse (1042443412), we get a palindrome (3185885813).

The spelling of 2143442401 in words is "two billion, one hundred forty-three million, four hundred forty-two thousand, four hundred one".