20344042 has 4 divisors (see below), whose sum is σ = 30516066. Its totient is φ = 10172020.

The previous prime is 20344039. The next prime is 20344057. The reversal of 20344042 is 24044302.

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., 20241001 + 103041 = 4499^2 + 321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5086009 + ... + 5086012.

Almost surely, 2^20344042 is an apocalyptic number.

20344042 is a deficient number, since it is larger than the sum of its proper divisors (10172024).

20344042 is a wasteful number, since it uses less digits than its factorization.

20344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10172023.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20344042 is about 4510.4370076524. The cubic root of 20344042 is about 272.9893773233.

Adding to 20344042 its reverse (24044302), we get a palindrome (44388344).

The spelling of 20344042 in words is "twenty million, three hundred forty-four thousand, forty-two".