2120402343 has 4 divisors (see below), whose sum is σ = 2827203128. Its totient is φ = 1413601560.

The previous prime is 2120402281. The next prime is 2120402359. The reversal of 2120402343 is 3432040212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2120402343 - 2⁸ = 2120402087 is a prime.

It is a super-2 number, since 2×2120402343² = 8992212192399779298, 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 (2120402243) 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, 353400388 + ... + 353400393.

It is an arithmetic number, because the mean of its divisors is an integer number (706800782).

Almost surely, 2^2120402343 is an apocalyptic number.

2120402343 is a deficient number, since it is larger than the sum of its proper divisors (706800785).

2120402343 is an equidigital number, since it uses as much as digits as its factorization.

2120402343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706800784.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2120402343 is about 46047.8266913869. The cubic root of 2120402343 is about 1284.7129202692.

Adding to 2120402343 its reverse (3432040212), we get a palindrome (5552442555).

The spelling of 2120402343 in words is "two billion, one hundred twenty million, four hundred two thousand, three hundred forty-three".