2126740449 has 8 divisors (see below), whose sum is σ = 2856054880. Its totient is φ = 1407626496.

The previous prime is 2126740391. The next prime is 2126740493. The reversal of 2126740449 is 9440476212.

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

It is not a de Polignac number, because 2126740449 - 2⁸ = 2126740193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126740249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549632 + ... + 2550465.

It is an arithmetic number, because the mean of its divisors is an integer number (357006860).

Almost surely, 2^2126740449 is an apocalyptic number.

It is an amenable number.

2126740449 is a deficient number, since it is larger than the sum of its proper divisors (729314431).

2126740449 is a wasteful number, since it uses less digits than its factorization.

2126740449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100239.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 2126740449 is about 46116.5962425676. The cubic root of 2126740449 is about 1285.9916944077.

It can be divided in two parts, 21267 and 40449, that added together give a palindrome (61716).

The spelling of 2126740449 in words is "two billion, one hundred twenty-six million, seven hundred forty thousand, four hundred forty-nine".