2120401343 has 4 divisors (see below), whose sum is σ = 2134443888. Its totient is φ = 2106358800.

The previous prime is 2120401321. The next prime is 2120401379. The reversal of 2120401343 is 3431040212.

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 2120401343 - 2¹⁰ = 2120400319 is a prime.

It is a super-2 number, since 2×2120401343² = 8992203710792407298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120400343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7021046 + ... + 7021347.

It is an arithmetic number, because the mean of its divisors is an integer number (533610972).

Almost surely, 2^2120401343 is an apocalyptic number.

2120401343 is a deficient number, since it is larger than the sum of its proper divisors (14042545).

2120401343 is a wasteful number, since it uses less digits than its factorization.

2120401343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042544.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2120401343 is about 46047.8158331098. The cubic root of 2120401343 is about 1284.7127183086.

Adding to 2120401343 its reverse (3431040212), we get a palindrome (5551441555).

The spelling of 2120401343 in words is "two billion, one hundred twenty million, four hundred one thousand, three hundred forty-three".