2411921 has 4 divisors (see below), whose sum is σ = 2424612. Its totient is φ = 2399232.

The previous prime is 2411881. The next prime is 2411957. The reversal of 2411921 is 1291142.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1291142 = 2 ⋅645571.

It can be written as a sum of positive squares in 2 ways, for example, as 923521 + 1488400 = 961^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2411921 - 2¹⁰ = 2410897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2411893 and 2411902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2411971) 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, 6056 + ... + 6441.

It is an arithmetic number, because the mean of its divisors is an integer number (606153).

2^2411921 is an apocalyptic number.

It is an amenable number.

2411921 is a deficient number, since it is larger than the sum of its proper divisors (12691).

2411921 is a wasteful number, since it uses less digits than its factorization.

2411921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12690.

The product of its digits is 144, while the sum is 20.

The square root of 2411921 is about 1553.0360588216. The cubic root of 2411921 is about 134.1078992826.

The spelling of 2411921 in words is "two million, four hundred eleven thousand, nine hundred twenty-one".