2440121 has 4 divisors (see below), whose sum is σ = 2496912. Its totient is φ = 2383332.

The previous prime is 2440111. The next prime is 2440127. The reversal of 2440121 is 1210442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1210442 = 2 ⋅605221.

It is a cyclic number.

It is not a de Polignac number, because 2440121 - 2¹⁰ = 2439097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440096 and 2440105.

It is not an unprimeable number, because it can be changed into a prime (2440127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28331 + ... + 28416.

It is an arithmetic number, because the mean of its divisors is an integer number (624228).

2^2440121 is an apocalyptic number.

It is an amenable number.

2440121 is a deficient number, since it is larger than the sum of its proper divisors (56791).

2440121 is an equidigital number, since it uses as much as digits as its factorization.

2440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56790.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2440121 is about 1562.0886658574. The cubic root of 2440121 is about 134.6285352888.

Adding to 2440121 its reverse (1210442), we get a palindrome (3650563).

The spelling of 2440121 in words is "two million, four hundred forty thousand, one hundred twenty-one".