20852042 has 8 divisors (see below), whose sum is σ = 31297476. Its totient is φ = 10419552.

The previous prime is 20852023. The next prime is 20852087. The reversal of 20852042 is 24025802.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 231361 = 4541^2 + 481^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20851999 and 20852017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4358 + ... + 7790.

Almost surely, 2^20852042 is an apocalyptic number.

20852042 is a deficient number, since it is larger than the sum of its proper divisors (10445434).

20852042 is a wasteful number, since it uses less digits than its factorization.

20852042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 20852042 is about 4566.4036177281. The cubic root of 20852042 is about 275.2429456398.

Adding to 20852042 its reverse (24025802), we get a palindrome (44877844).

The spelling of 20852042 in words is "twenty million, eight hundred fifty-two thousand, forty-two".