20542052 has 24 divisors (see below), whose sum is σ = 38296440. Its totient is φ = 9607680.

The previous prime is 20542051. The next prime is 20542061. The reversal of 20542052 is 25024502.

It can be written as a sum of positive squares in 4 ways, for example, as 952576 + 19589476 = 976^2 + 4426^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11474 + ... + 13142.

It is an arithmetic number, because the mean of its divisors is an integer number (1595685).

Almost surely, 2^20542052 is an apocalyptic number.

It is an amenable number.

20542052 is a deficient number, since it is larger than the sum of its proper divisors (17754388).

20542052 is a wasteful number, since it uses less digits than its factorization.

20542052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 20542052 is about 4532.3340565320. The cubic root of 20542052 is about 273.8721942889.

Adding to 20542052 its reverse (25024502), we get a palindrome (45566554).

The spelling of 20542052 in words is "twenty million, five hundred forty-two thousand, fifty-two".