340402443 has 8 divisors (see below), whose sum is σ = 457886928. Its totient is φ = 224926464.

The previous prime is 340402429. The next prime is 340402477. The reversal of 340402443 is 344204043.

It is a happy number.

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

It is not a de Polignac number, because 340402443 - 2⁴ = 340402427 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (340402343) 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, 501730 + ... + 502407.

It is an arithmetic number, because the mean of its divisors is an integer number (57235866).

Almost surely, 2^340402443 is an apocalyptic number.

340402443 is a deficient number, since it is larger than the sum of its proper divisors (117484485).

340402443 is a wasteful number, since it uses less digits than its factorization.

340402443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004253.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 340402443 is about 18449.9984552845. The cubic root of 340402443 is about 698.2284749165.

Adding to 340402443 its reverse (344204043), we get a palindrome (684606486).

The spelling of 340402443 in words is "three hundred forty million, four hundred two thousand, four hundred forty-three".