2120157743 has 16 divisors (see below), whose sum is σ = 2355004800. Its totient is φ = 1892410080.

The previous prime is 2120157719. The next prime is 2120157749. The reversal of 2120157743 is 3477510212.

It is not a de Polignac number, because 2120157743 - 2¹⁰ = 2120156719 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 (2120157749) 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 15 ways as a sum of consecutive naturals, for example, 727373 + ... + 730281.

It is an arithmetic number, because the mean of its divisors is an integer number (147187800).

Almost surely, 2^2120157743 is an apocalyptic number.

2120157743 is a deficient number, since it is larger than the sum of its proper divisors (234847057).

2120157743 is a wasteful number, since it uses less digits than its factorization.

2120157743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2120157743 is about 46045.1706805393. The cubic root of 2120157743 is about 1284.6635188172.

Adding to 2120157743 its reverse (3477510212), we get a palindrome (5597667955).

The spelling of 2120157743 in words is "two billion, one hundred twenty million, one hundred fifty-seven thousand, seven hundred forty-three".