2540365121 has 4 divisors (see below), whose sum is σ = 2903274432. Its totient is φ = 2177455812.

The previous prime is 2540365031. The next prime is 2540365133. The reversal of 2540365121 is 1215630452.

2540365121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 2540365121 - 2¹⁸ = 2540102977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540365141) 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, 181454645 + ... + 181454658.

It is an arithmetic number, because the mean of its divisors is an integer number (725818608).

Almost surely, 2^2540365121 is an apocalyptic number.

It is an amenable number.

2540365121 is a deficient number, since it is larger than the sum of its proper divisors (362909311).

2540365121 is an equidigital number, since it uses as much as digits as its factorization.

2540365121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362909310.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2540365121 is about 50402.0348894764. The cubic root of 2540365121 is about 1364.4743638447.

Adding to 2540365121 its reverse (1215630452), we get a palindrome (3755995573).

The spelling of 2540365121 in words is "two billion, five hundred forty million, three hundred sixty-five thousand, one hundred twenty-one".