340423043 has 4 divisors (see below), whose sum is σ = 340877088. Its totient is φ = 339969000.

The previous prime is 340423037. The next prime is 340423063. The reversal of 340423043 is 340324043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340324043 = 173 ⋅1967191.

It is a cyclic number.

It is not a de Polignac number, because 340423043 - 2²⁴ = 323645827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340423063) 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, 225896 + ... + 227397.

It is an arithmetic number, because the mean of its divisors is an integer number (85219272).

Almost surely, 2^340423043 is an apocalyptic number.

340423043 is a deficient number, since it is larger than the sum of its proper divisors (454045).

340423043 is an equidigital number, since it uses as much as digits as its factorization.

340423043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454044.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 340423043 is about 18450.5567124681. The cubic root of 340423043 is about 698.2425594378.

Adding to 340423043 its reverse (340324043), we get a palindrome (680747086).

The spelling of 340423043 in words is "three hundred forty million, four hundred twenty-three thousand, forty-three".