2440340741281 has 3 divisors (see below), whose sum is σ = 2440342303441. Its totient is φ = 2440339179122.

The previous prime is 2440340741269. The next prime is 2440340741297. The reversal of 2440340741281 is 1821470430442.

The square root of 2440340741281 is 1562159.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2440340741281 - 2⁵ = 2440340741249 is a prime.

It is a super-2 number, since 2×2440340741281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2440340741221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 781080 + ... + 2343238.

Almost surely, 2^{2440340741281} is an apocalyptic number.

2440340741281 is the 1562159-th square number.

2440340741281 is the 781080-th centered octagonal number.

It is an amenable number.

2440340741281 is a deficient number, since it is larger than the sum of its proper divisors (1562160).

2440340741281 is an frugal number, since it uses more digits than its factorization.

2440340741281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124318 (or 1562159 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 2440340741281 in words is "two trillion, four hundred forty billion, three hundred forty million, seven hundred forty-one thousand, two hundred eighty-one".