20446042 has 4 divisors (see below), whose sum is σ = 30669066. Its totient is φ = 10223020.

The previous prime is 20446031. The next prime is 20446051. The reversal of 20446042 is 24064402.

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., 19704721 + 741321 = 4439^2 + 861^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111509 + ... + 5111512.

Almost surely, 2^20446042 is an apocalyptic number.

20446042 is a deficient number, since it is larger than the sum of its proper divisors (10223024).

20446042 is a wasteful number, since it uses less digits than its factorization.

20446042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223023.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20446042 is about 4521.7299786697. The cubic root of 20446042 is about 273.4448507216. Note that the first 3 decimals are identical.

The spelling of 20446042 in words is "twenty million, four hundred forty-six thousand, forty-two".