20211042 has 8 divisors (see below), whose sum is σ = 40422096. Its totient is φ = 6737012.

The previous prime is 20211031. The next prime is 20211077. The reversal of 20211042 is 24011202.

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

20211042 is an admirable number.

It is an unprimeable number.

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, 1684248 + ... + 1684259.

It is an arithmetic number, because the mean of its divisors is an integer number (5052762).

Almost surely, 2^20211042 is an apocalyptic number.

20211042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211042 is a wasteful number, since it uses less digits than its factorization.

20211042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368512.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20211042 is about 4495.6692493999. The cubic root of 20211042 is about 272.3931831717.

Adding to 20211042 its reverse (24011202), we get a palindrome (44222244).

The spelling of 20211042 in words is "twenty million, two hundred eleven thousand, forty-two".