2120207743 has 4 divisors (see below), whose sum is σ = 2120330520. Its totient is φ = 2120084968.

The previous prime is 2120207737. The next prime is 2120207773. The reversal of 2120207743 is 3477020212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120207743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120207773) 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, 30205 + ... + 71782.

It is an arithmetic number, because the mean of its divisors is an integer number (530082630).

Almost surely, 2^2120207743 is an apocalyptic number.

2120207743 is a deficient number, since it is larger than the sum of its proper divisors (122777).

2120207743 is a wasteful number, since it uses less digits than its factorization.

2120207743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122776.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 2120207743 is about 46045.7136224426. The cubic root of 2120207743 is about 1284.6736175423.

Adding to 2120207743 its reverse (3477020212), we get a palindrome (5597227955).

The spelling of 2120207743 in words is "two billion, one hundred twenty million, two hundred seven thousand, seven hundred forty-three".