339820042 has 4 divisors (see below), whose sum is σ = 509730066. Its totient is φ = 169910020.

The previous prime is 339819989. The next prime is 339820043. The reversal of 339820042 is 240028933.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 273869401 + 65950641 = 16549^2 + 8121^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 339819986 and 339820013.

It is not an unprimeable number, because it can be changed into a prime (339820043) by changing a digit.

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 as a sum of consecutive naturals, namely, 84955009 + ... + 84955012.

Almost surely, 2^339820042 is an apocalyptic number.

339820042 is a deficient number, since it is larger than the sum of its proper divisors (169910024).

339820042 is a wasteful number, since it uses less digits than its factorization.

339820042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169910023.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 339820042 is about 18434.2084722941. The cubic root of 339820042 is about 697.8300434857.

Adding to 339820042 its reverse (240028933), we get a palindrome (579848975).

The spelling of 339820042 in words is "three hundred thirty-nine million, eight hundred twenty thousand, forty-two".