2732123129 has 4 divisors (see below), whose sum is σ = 2783672676. Its totient is φ = 2680573584.

The previous prime is 2732123111. The next prime is 2732123167. The reversal of 2732123129 is 9213212372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2130745600 + 601377529 = 46160^2 + 24523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2732123129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2732123095 and 2732123104.

It is not an unprimeable number, because it can be changed into a prime (2732123729) 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, 25774694 + ... + 25774799.

It is an arithmetic number, because the mean of its divisors is an integer number (695918169).

Almost surely, 2^2732123129 is an apocalyptic number.

It is an amenable number.

2732123129 is a deficient number, since it is larger than the sum of its proper divisors (51549547).

2732123129 is an equidigital number, since it uses as much as digits as its factorization.

2732123129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51549546.

The product of its digits is 9072, while the sum is 32.

The square root of 2732123129 is about 52269.7152182791. The cubic root of 2732123129 is about 1397.9772027381.

The spelling of 2732123129 in words is "two billion, seven hundred thirty-two million, one hundred twenty-three thousand, one hundred twenty-nine".