20555042 has 8 divisors (see below), whose sum is σ = 31054800. Its totient is φ = 10203444.

The previous prime is 20555009. The next prime is 20555071. The reversal of 20555042 is 24055502.

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 = 20554999 and 20555017.

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, 36692 + ... + 37247.

It is an arithmetic number, because the mean of its divisors is an integer number (3881850).

Almost surely, 2^20555042 is an apocalyptic number.

20555042 is a deficient number, since it is larger than the sum of its proper divisors (10499758).

20555042 is a wasteful number, since it uses less digits than its factorization.

20555042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74080.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20555042 is about 4533.7668665250. The cubic root of 20555042 is about 273.9299108560.

The spelling of 20555042 in words is "twenty million, five hundred fifty-five thousand, forty-two".