20020542 has 32 divisors (see below), whose sum is σ = 41572608. Its totient is φ = 6422976.

The previous prime is 20020541. The next prime is 20020571. The reversal of 20020542 is 24502002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18303 + ... + 19365.

It is an arithmetic number, because the mean of its divisors is an integer number (1299144).

Almost surely, 2^20020542 is an apocalyptic number.

20020542 is an abundant number, since it is smaller than the sum of its proper divisors (21552066).

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

20020542 is a wasteful number, since it uses less digits than its factorization.

20020542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

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

The square root of 20020542 is about 4474.4320309957. The cubic root of 20020542 is about 271.5346624717.

Adding to 20020542 its reverse (24502002), we get a palindrome (44522544).

The spelling of 20020542 in words is "twenty million, twenty thousand, five hundred forty-two".