20042574 has 8 divisors (see below), whose sum is σ = 40085160. Its totient is φ = 6680856.

The previous prime is 20042573. The next prime is 20042579. The reversal of 20042574 is 47524002.

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

20042574 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042573) 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 3 ways as a sum of consecutive naturals, for example, 1670209 + ... + 1670220.

It is an arithmetic number, because the mean of its divisors is an integer number (5010645).

Almost surely, 2^20042574 is an apocalyptic number.

20042574 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20042574 is a wasteful number, since it uses less digits than its factorization.

20042574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340434.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 20042574 is about 4476.8933424865. The cubic root of 20042574 is about 271.6342311801.

Adding to 20042574 its reverse (47524002), we get a palindrome (67566576).

The spelling of 20042574 in words is "twenty million, forty-two thousand, five hundred seventy-four".