20221042 has 8 divisors (see below), whose sum is σ = 30384000. Its totient is φ = 10093044.

The previous prime is 20221027. The next prime is 20221049. The reversal of 20221042 is 24012202.

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

It is not an unprimeable number, because it can be changed into a prime (20221049) 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 in 3 ways as a sum of consecutive naturals, for example, 7242 + ... + 9637.

It is an arithmetic number, because the mean of its divisors is an integer number (3798000).

Almost surely, 2^20221042 is an apocalyptic number.

20221042 is a deficient number, since it is larger than the sum of its proper divisors (10162958).

20221042 is a wasteful number, since it uses less digits than its factorization.

20221042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17480.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20221042 is about 4496.7812933253. The cubic root of 20221042 is about 272.4381005772.

Adding to 20221042 its reverse (24012202), we get a palindrome (44233244).

The spelling of 20221042 in words is "twenty million, two hundred twenty-one thousand, forty-two".