340346642 has 16 divisors (see below), whose sum is σ = 513802872. Its totient is φ = 169082880.

The previous prime is 340346623. The next prime is 340346651. The reversal of 340346642 is 246643043.

It can be written as a sum of positive squares in 4 ways, for example, as 270306481 + 70040161 = 16441^2 + 8369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 340346599 and 340346608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328958 + ... + 329990.

Almost surely, 2^340346642 is an apocalyptic number.

340346642 is a deficient number, since it is larger than the sum of its proper divisors (173456230).

340346642 is a wasteful number, since it uses less digits than its factorization.

340346642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 340346642 is about 18448.4861709572. The cubic root of 340346642 is about 698.1903201019.

Adding to 340346642 its reverse (246643043), we get a palindrome (586989685).

The spelling of 340346642 in words is "three hundred forty million, three hundred forty-six thousand, six hundred forty-two".