42020203 has 4 divisors (see below), whose sum is σ = 43045128. Its totient is φ = 40995280.

The previous prime is 42020201. The next prime is 42020207. The reversal of 42020203 is 30202024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42020203 - 2¹ = 42020201 is a prime.

It is a super-2 number, since 2×42020203² = 3531394920322418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42020201) 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, 512401 + ... + 512482.

It is an arithmetic number, because the mean of its divisors is an integer number (10761282).

Almost surely, 2^42020203 is an apocalyptic number.

42020203 is a deficient number, since it is larger than the sum of its proper divisors (1024925).

42020203 is a wasteful number, since it uses less digits than its factorization.

42020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024924.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 42020203 is about 6482.2992063002. The cubic root of 42020203 is about 347.6583906070.

Adding to 42020203 its reverse (30202024), we get a palindrome (72222227).

The spelling of 42020203 in words is "forty-two million, twenty thousand, two hundred three".