2126634421 has 8 divisors (see below), whose sum is σ = 2133540288. Its totient is φ = 2119740000.

The previous prime is 2126634403. The next prime is 2126634439. The reversal of 2126634421 is 1244366212.

It is an interprime number because it is at equal distance from previous prime (2126634403) and next prime (2126634439).

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 2126634421 - 2²³ = 2118245813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126634401) 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, 504121 + ... + 508321.

It is an arithmetic number, because the mean of its divisors is an integer number (266692536).

Almost surely, 2^2126634421 is an apocalyptic number.

It is an amenable number.

2126634421 is a deficient number, since it is larger than the sum of its proper divisors (6905867).

2126634421 is a wasteful number, since it uses less digits than its factorization.

2126634421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723.

The product of its digits is 13824, while the sum is 31.

The square root of 2126634421 is about 46115.4466637807. The cubic root of 2126634421 is about 1285.9703231439.

Subtracting from 2126634421 its reverse (1244366212), we obtain a square (882268209 = 29703²).

The spelling of 2126634421 in words is "two billion, one hundred twenty-six million, six hundred thirty-four thousand, four hundred twenty-one".