340440142043 has 4 divisors (see below), whose sum is σ = 340442572200. Its totient is φ = 340437711888.

The previous prime is 340440142037. The next prime is 340440142051. The reversal of 340440142043 is 340241044043.

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: 340241044043 = 40429 ⋅8415767.

It is a cyclic number.

It is not a de Polignac number, because 340440142043 - 2³⁸ = 65562235099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340440141997 and 340440142015.

It is not an unprimeable number, because it can be changed into a prime (340440142013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991193 + ... + 1289706.

It is an arithmetic number, because the mean of its divisors is an integer number (85110643050).

Almost surely, 2^340440142043 is an apocalyptic number.

340440142043 is a deficient number, since it is larger than the sum of its proper divisors (2430157).

340440142043 is a wasteful number, since it uses less digits than its factorization.

340440142043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430156.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 340440142043 its reverse (340241044043), we get a palindrome (680681186086).

The spelling of 340440142043 in words is "three hundred forty billion, four hundred forty million, one hundred forty-two thousand, forty-three".