20342433442 has 4 divisors (see below), whose sum is σ = 30513650166. Its totient is φ = 10171216720.

The previous prime is 20342433439. The next prime is 20342433479. The reversal of 20342433442 is 24433424302.

It is a happy number.

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., 20280323281 + 62110161 = 142409^2 + 7881^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085608359 + ... + 5085608362.

Almost surely, 2^20342433442 is an apocalyptic number.

20342433442 is a deficient number, since it is larger than the sum of its proper divisors (10171216724).

20342433442 is a wasteful number, since it uses less digits than its factorization.

20342433442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171216723.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20342433442 its reverse (24433424302), we get a palindrome (44775857744).

The spelling of 20342433442 in words is "twenty billion, three hundred forty-two million, four hundred thirty-three thousand, four hundred forty-two".