340121443 has 4 divisors (see below), whose sum is σ = 348031288. Its totient is φ = 332211600.

The previous prime is 340121437. The next prime is 340121459. The reversal of 340121443 is 344121043.

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 340121443 - 2⁹ = 340120931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340121423) 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, 3954858 + ... + 3954943.

It is an arithmetic number, because the mean of its divisors is an integer number (87007822).

Almost surely, 2^340121443 is an apocalyptic number.

340121443 is a deficient number, since it is larger than the sum of its proper divisors (7909845).

340121443 is an equidigital number, since it uses as much as digits as its factorization.

340121443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7909844.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 340121443 is about 18442.3817062764. The cubic root of 340121443 is about 698.0362943391.

Adding to 340121443 its reverse (344121043), we get a palindrome (684242486).

The spelling of 340121443 in words is "three hundred forty million, one hundred twenty-one thousand, four hundred forty-three".