2126543345 has 8 divisors (see below), whose sum is σ = 2701961064. Its totient is φ = 1601161984.

The previous prime is 2126543333. The next prime is 2126543399. The reversal of 2126543345 is 5433456212.

It can be written as a sum of positive squares in 4 ways, for example, as 97851664 + 2028691681 = 9892^2 + 45041^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2126543345 - 2²⁰ = 2125494769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12508994 + ... + 12509163.

It is an arithmetic number, because the mean of its divisors is an integer number (337745133).

Almost surely, 2^2126543345 is an apocalyptic number.

It is an amenable number.

2126543345 is a deficient number, since it is larger than the sum of its proper divisors (575417719).

2126543345 is a wasteful number, since it uses less digits than its factorization.

2126543345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25018179.

The product of its digits is 86400, while the sum is 35.

The square root of 2126543345 is about 46114.4591749703. The cubic root of 2126543345 is about 1285.9519650748.

Adding to 2126543345 its reverse (5433456212), we get a palindrome (7559999557).

The spelling of 2126543345 in words is "two billion, one hundred twenty-six million, five hundred forty-three thousand, three hundred forty-five".