340073429 has 2 divisors, whose sum is σ = 340073430. Its totient is φ = 340073428.

The previous prime is 340073411. The next prime is 340073431. The reversal of 340073429 is 924370043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295049329 + 45024100 = 17177^2 + 6710^2 .

It is an emirp because it is prime and its reverse (924370043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340073429 - 2¹⁶ = 340007893 is a prime.

It is a super-2 number, since 2×340073429² = 231299874223636082, which contains 22 as substring.

Together with 340073431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340073395 and 340073404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340070429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170036714 + 170036715.

It is an arithmetic number, because the mean of its divisors is an integer number (170036715).

Almost surely, 2^340073429 is an apocalyptic number.

It is an amenable number.

340073429 is a deficient number, since it is larger than the sum of its proper divisors (1).

340073429 is an equidigital number, since it uses as much as digits as its factorization.

340073429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 340073429 is about 18441.0799304162. The cubic root of 340073429 is about 698.0034461780.

The spelling of 340073429 in words is "three hundred forty million, seventy-three thousand, four hundred twenty-nine".