240455340401 has 4 divisors (see below), whose sum is σ = 240456321252. Its totient is φ = 240454359552.

The previous prime is 240455340397. The next prime is 240455340407. The reversal of 240455340401 is 104043554042.

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 can be written as a sum of positive squares in 2 ways, for example, as 101505322801 + 138950017600 = 318599^2 + 372760^2 .

It is a cyclic number.

It is not a de Polignac number, because 240455340401 - 2² = 240455340397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240455340407) 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, 233465 + ... + 731721.

It is an arithmetic number, because the mean of its divisors is an integer number (60114080313).

Almost surely, 2^240455340401 is an apocalyptic number.

It is an amenable number.

240455340401 is a deficient number, since it is larger than the sum of its proper divisors (980851).

240455340401 is an equidigital number, since it uses as much as digits as its factorization.

240455340401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980850.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 240455340401 its reverse (104043554042), we get a palindrome (344498894443).

The spelling of 240455340401 in words is "two hundred forty billion, four hundred fifty-five million, three hundred forty thousand, four hundred one".