340004344021 has 8 divisors (see below), whose sum is σ = 342817815384. Its totient is φ = 337195680000.

The previous prime is 340004344007. The next prime is 340004344033. The reversal of 340004344021 is 120443400043.

It can be written as a sum of positive squares in 4 ways, for example, as 277559331921 + 62445012100 = 526839^2 + 249890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340004344021 - 2⁷ = 340004343893 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 (340004344051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059730 + ... + 1342771.

It is an arithmetic number, because the mean of its divisors is an integer number (42852226923).

Almost surely, 2^340004344021 is an apocalyptic number.

It is an amenable number.

340004344021 is a deficient number, since it is larger than the sum of its proper divisors (2813471363).

340004344021 is a wasteful number, since it uses less digits than its factorization.

340004344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403671.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 340004344021 its reverse (120443400043), we get a palindrome (460447744064).

The spelling of 340004344021 in words is "three hundred forty billion, four million, three hundred forty-four thousand, twenty-one".