2126643 has 8 divisors (see below), whose sum is σ = 2882256. Its totient is φ = 1394400.

The previous prime is 2126639. The next prime is 2126659. The reversal of 2126643 is 3466212.

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

It is not a de Polignac number, because 2126643 - 2² = 2126639 is a prime.

It is a super-2 number, since 2×2126643² = 9045220898898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2126623) 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, 5628 + ... + 5993.

It is an arithmetic number, because the mean of its divisors is an integer number (360282).

2^2126643 is an apocalyptic number.

2126643 is a deficient number, since it is larger than the sum of its proper divisors (755613).

2126643 is a wasteful number, since it uses less digits than its factorization.

2126643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685.

The product of its digits is 1728, while the sum is 24.

The square root of 2126643 is about 1458.3014091744. The cubic root of 2126643 is about 128.5972052375.

The spelling of 2126643 in words is "two million, one hundred twenty-six thousand, six hundred forty-three".