2126090997 has 20 divisors (see below), whose sum is σ = 3314102880. Its totient is φ = 1355766984.

The previous prime is 2126090969. The next prime is 2126091001. The reversal of 2126090997 is 7990906212.

It is not a de Polignac number, because 2126090997 - 2⁶ = 2126090933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126020997) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 568747 + ... + 572472.

It is an arithmetic number, because the mean of its divisors is an integer number (165705144).

Almost surely, 2^2126090997 is an apocalyptic number.

2126090997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2126090997 is a deficient number, since it is larger than the sum of its proper divisors (1188011883).

2126090997 is a wasteful number, since it uses less digits than its factorization.

2126090997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141254 (or 1141245 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 2126090997 is about 46109.5542919252. The cubic root of 2126090997 is about 1285.8607781178.

The spelling of 2126090997 in words is "two billion, one hundred twenty-six million, ninety thousand, nine hundred ninety-seven".