2124091 has 4 divisors (see below), whose sum is σ = 2127384. Its totient is φ = 2120800.

The previous prime is 2124049. The next prime is 2124127. The reversal of 2124091 is 1904212.

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 2124091 - 2¹⁹ = 1599803 is a prime.

It is a Duffinian number.

2124091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2124011) 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, 325 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (531846).

2^2124091 is an apocalyptic number.

2124091 is a deficient number, since it is larger than the sum of its proper divisors (3293).

2124091 is an equidigital number, since it uses as much as digits as its factorization.

2124091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2124091 is about 1457.4261559338. The cubic root of 2124091 is about 128.5457451932.

The spelling of 2124091 in words is "two million, one hundred twenty-four thousand, ninety-one".