2126289247 has 4 divisors (see below), whose sum is σ = 2145106080. Its totient is φ = 2107472416.

The previous prime is 2126289223. The next prime is 2126289281. The reversal of 2126289247 is 7429826212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2126289247 - 2¹¹ = 2126287199 is a prime.

It is a super-2 number, since 2×2126289247² = 9042211923815654018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126289047) 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, 9408247 + ... + 9408472.

It is an arithmetic number, because the mean of its divisors is an integer number (536276520).

Almost surely, 2^2126289247 is an apocalyptic number.

2126289247 is a deficient number, since it is larger than the sum of its proper divisors (18816833).

2126289247 is a wasteful number, since it uses less digits than its factorization.

2126289247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18816832.

The product of its digits is 193536, while the sum is 43.

The square root of 2126289247 is about 46111.7040131895. The cubic root of 2126289247 is about 1285.9007441049.

The spelling of 2126289247 in words is "two billion, one hundred twenty-six million, two hundred eighty-nine thousand, two hundred forty-seven".