20527042 has 4 divisors (see below), whose sum is σ = 30790566. Its totient is φ = 10263520.

The previous prime is 20527037. The next prime is 20527057. The reversal of 20527042 is 24072502.

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., 14371681 + 6155361 = 3791^2 + 2481^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 5131759 + ... + 5131762.

Almost surely, 2^20527042 is an apocalyptic number.

20527042 is a deficient number, since it is larger than the sum of its proper divisors (10263524).

20527042 is a wasteful number, since it uses less digits than its factorization.

20527042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263523.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20527042 is about 4530.6778742259. The cubic root of 20527042 is about 273.8054722415.

Adding to 20527042 its reverse (24072502), we get a palindrome (44599544).

The spelling of 20527042 in words is "twenty million, five hundred twenty-seven thousand, forty-two".