20022542 has 8 divisors (see below), whose sum is σ = 31614600. Its totient is φ = 9484344.

The previous prime is 20022529. The next prime is 20022547. The reversal of 20022542 is 24522002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20022542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263417 + ... + 263492.

It is an arithmetic number, because the mean of its divisors is an integer number (3951825).

Almost surely, 2^20022542 is an apocalyptic number.

20022542 is a deficient number, since it is larger than the sum of its proper divisors (11592058).

20022542 is a wasteful number, since it uses less digits than its factorization.

20022542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526930.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20022542 is about 4474.6555174672. The cubic root of 20022542 is about 271.5437040392.

Adding to 20022542 its reverse (24522002), we get a palindrome (44544544).

The spelling of 20022542 in words is "twenty million, twenty-two thousand, five hundred forty-two".