2124409 has 8 divisors (see below), whose sum is σ = 2555840. Its totient is φ = 1724976.

The previous prime is 2124403. The next prime is 2124431. The reversal of 2124409 is 9044212.

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

It is a 4-Lehmer number, since φ(2124409) divides (2124409-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 2124409 - 2³ = 2124401 is a prime.

It is a super-2 number, since 2×2124409² = 9026227198562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2124409.

It is not an unprimeable number, because it can be changed into a prime (2124401) 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, 7854 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (319480).

2^2124409 is an apocalyptic number.

It is an amenable number.

2124409 is a deficient number, since it is larger than the sum of its proper divisors (431431).

2124409 is a wasteful number, since it uses less digits than its factorization.

2124409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15999.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2124409 is about 1457.5352482873. The cubic root of 2124409 is about 128.5521597814.

The spelling of 2124409 in words is "two million, one hundred twenty-four thousand, four hundred nine".