240420340321111 has 4 divisors (see below), whose sum is σ = 240420855918712. Its totient is φ = 240419824723512.

The previous prime is 240420340321093. The next prime is 240420340321123. The reversal of 240420340321111 is 111123043024042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240420340321111 - 2¹⁷ = 240420340190039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240420340321111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240420340121111) 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, 257098725 + ... + 258032158.

It is an arithmetic number, because the mean of its divisors is an integer number (60105213979678).

Almost surely, 2^{240420340321111} is an apocalyptic number.

240420340321111 is a deficient number, since it is larger than the sum of its proper divisors (515597601).

240420340321111 is an equidigital number, since it uses as much as digits as its factorization.

240420340321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515597600.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 240420340321111 its reverse (111123043024042), we get a palindrome (351543383345153).

The spelling of 240420340321111 in words is "two hundred forty trillion, four hundred twenty billion, three hundred forty million, three hundred twenty-one thousand, one hundred eleven".