340426423 has 2 divisors, whose sum is σ = 340426424. Its totient is φ = 340426422.

The previous prime is 340426349. The next prime is 340426481. The reversal of 340426423 is 324624043.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340426423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340426391 and 340426400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340426483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170213211 + 170213212.

It is an arithmetic number, because the mean of its divisors is an integer number (170213212).

Almost surely, 2^340426423 is an apocalyptic number.

340426423 is a deficient number, since it is larger than the sum of its proper divisors (1).

340426423 is an equidigital number, since it uses as much as digits as its factorization.

340426423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 340426423 is about 18450.6483083929. The cubic root of 340426423 is about 698.2448703390.

The spelling of 340426423 in words is "three hundred forty million, four hundred twenty-six thousand, four hundred twenty-three".