20050542 has 48 divisors (see below), whose sum is σ = 45658080. Its totient is φ = 6350400.

The previous prime is 20050523. The next prime is 20050561. The reversal of 20050542 is 24505002.

It is an interprime number because it is at equal distance from previous prime (20050523) and next prime (20050561).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36792 + ... + 37332.

It is an arithmetic number, because the mean of its divisors is an integer number (951210).

Almost surely, 2^20050542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20050542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22829040).

20050542 is an abundant number, since it is smaller than the sum of its proper divisors (25607538).

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

20050542 is a wasteful number, since it uses less digits than its factorization.

20050542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 20050542 is about 4477.7831568757. The cubic root of 20050542 is about 271.6702228113.

Adding to 20050542 its reverse (24505002), we get a palindrome (44555544).

It can be divided in two parts, 2005054 and 2, that added together give a square (2005056 = 1416²).

The spelling of 20050542 in words is "twenty million, fifty thousand, five hundred forty-two".