340301440421 has 4 divisors (see below), whose sum is σ = 341150072844. Its totient is φ = 339452808000.

The previous prime is 340301440403. The next prime is 340301440429. The reversal of 340301440421 is 124044103043.

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

It can be written as a sum of positive squares in 2 ways, for example, as 325572948100 + 14728492321 = 570590^2 + 121361^2 .

It is a cyclic number.

It is not a de Polignac number, because 340301440421 - 2¹⁴ = 340301424037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340301440429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424315610 + ... + 424316411.

It is an arithmetic number, because the mean of its divisors is an integer number (85287518211).

Almost surely, 2^340301440421 is an apocalyptic number.

It is an amenable number.

340301440421 is a deficient number, since it is larger than the sum of its proper divisors (848632423).

340301440421 is an equidigital number, since it uses as much as digits as its factorization.

340301440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848632422.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 340301440421 its reverse (124044103043), we get a palindrome (464345543464).

The spelling of 340301440421 in words is "three hundred forty billion, three hundred one million, four hundred forty thousand, four hundred twenty-one".