20030042 has 8 divisors (see below), whose sum is σ = 30064500. Its totient is φ = 10008544.

The previous prime is 20030027. The next prime is 20030053. The reversal of 20030042 is 24003002.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 58081 = 4469^2 + 241^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134 + ... + 7062.

Almost surely, 2^20030042 is an apocalyptic number.

20030042 is a deficient number, since it is larger than the sum of its proper divisors (10034458).

20030042 is a wasteful number, since it uses less digits than its factorization.

20030042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20030042 is about 4475.4934923425. The cubic root of 20030042 is about 271.5776045557.

Adding to 20030042 its reverse (24003002), we get a palindrome (44033044).

The spelling of 20030042 in words is "twenty million, thirty thousand, forty-two".