2540121 has 8 divisors (see below), whose sum is σ = 3398784. Its totient is φ = 1687440.

The previous prime is 2540113. The next prime is 2540141. The reversal of 2540121 is 1210452.

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

It is not a de Polignac number, because 2540121 - 2³ = 2540113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2540121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540141) 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, 385 + ... + 2286.

It is an arithmetic number, because the mean of its divisors is an integer number (424848).

2^2540121 is an apocalyptic number.

It is an amenable number.

2540121 is a deficient number, since it is larger than the sum of its proper divisors (858663).

2540121 is a wasteful number, since it uses less digits than its factorization.

2540121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2540121 is about 1593.7757056750. The cubic root of 2540121 is about 136.4430655231.

Adding to 2540121 its reverse (1210452), we get a palindrome (3750573).

The spelling of 2540121 in words is "two million, five hundred forty thousand, one hundred twenty-one".