20200542 has 16 divisors (see below), whose sum is σ = 40614912. Its totient is φ = 6697880.

The previous prime is 20200529. The next prime is 20200547. The reversal of 20200542 is 24500202.

20200542 is a modest number, since divided by 542 gives 202 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7668 + ... + 9959.

It is an arithmetic number, because the mean of its divisors is an integer number (2538432).

Almost surely, 2^20200542 is an apocalyptic number.

20200542 is an abundant number, since it is smaller than the sum of its proper divisors (20414370).

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

20200542 is a wasteful number, since it uses less digits than its factorization.

20200542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17823.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20200542 is about 4494.5013071530. The cubic root of 20200542 is about 272.3460039472.

Adding to 20200542 its reverse (24500202), we get a palindrome (44700744).

The spelling of 20200542 in words is "twenty million, two hundred thousand, five hundred forty-two".