340042273 has 2 divisors, whose sum is σ = 340042274. Its totient is φ = 340042272.

The previous prime is 340042271. The next prime is 340042349. The reversal of 340042273 is 372240043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270536704 + 69505569 = 16448^2 + 8337^2 .

It is a cyclic number.

It is not a de Polignac number, because 340042273 - 2¹ = 340042271 is a prime.

Together with 340042271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (340042271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170021136 + 170021137.

It is an arithmetic number, because the mean of its divisors is an integer number (170021137).

Almost surely, 2^340042273 is an apocalyptic number.

It is an amenable number.

340042273 is a deficient number, since it is larger than the sum of its proper divisors (1).

340042273 is an equidigital number, since it uses as much as digits as its factorization.

340042273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 340042273 is about 18440.2351666133. The cubic root of 340042273 is about 697.9821295469.

The spelling of 340042273 in words is "three hundred forty million, forty-two thousand, two hundred seventy-three".