340430042 has 8 divisors (see below), whose sum is σ = 510738816. Its totient is φ = 170183772.

The previous prime is 340430029. The next prime is 340430053. The reversal of 340430042 is 240034043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×340430042² = 231785226992243528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340429996 and 340430023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 26165.

It is an arithmetic number, because the mean of its divisors is an integer number (63842352).

Almost surely, 2^340430042 is an apocalyptic number.

340430042 is a deficient number, since it is larger than the sum of its proper divisors (170308774).

340430042 is a wasteful number, since it uses less digits than its factorization.

340430042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31252.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 340430042 is about 18450.7463805668. The cubic root of 340430042 is about 698.2473446272.

Adding to 340430042 its reverse (240034043), we get a palindrome (580464085).

The spelling of 340430042 in words is "three hundred forty million, four hundred thirty thousand, forty-two".