20043242 has 8 divisors (see below), whose sum is σ = 30119232. Its totient is φ = 10003500.

The previous prime is 20043241. The next prime is 20043253. The reversal of 20043242 is 24234002.

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 20043242.

It is not an unprimeable number, because it can be changed into a prime (20043241) 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, 7634 + ... + 9917.

It is an arithmetic number, because the mean of its divisors is an integer number (3764904).

Almost surely, 2^20043242 is an apocalyptic number.

20043242 is a deficient number, since it is larger than the sum of its proper divisors (10075990).

20043242 is a wasteful number, since it uses less digits than its factorization.

20043242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18124.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20043242 is about 4476.9679471714. The cubic root of 20043242 is about 271.6372489171.

Adding to 20043242 its reverse (24234002), we get a palindrome (44277244).

The spelling of 20043242 in words is "twenty million, forty-three thousand, two hundred forty-two".