42530203 has 4 divisors (see below), whose sum is σ = 43068640. Its totient is φ = 41991768.

The previous prime is 42530179. The next prime is 42530231. The reversal of 42530203 is 30203524.

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 42530203 - 2²¹ = 40433051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42530273) 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, 269100 + ... + 269257.

It is an arithmetic number, because the mean of its divisors is an integer number (10767160).

Almost surely, 2^42530203 is an apocalyptic number.

42530203 is a deficient number, since it is larger than the sum of its proper divisors (538437).

42530203 is an equidigital number, since it uses as much as digits as its factorization.

42530203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538436.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 42530203 is about 6521.5184581507. The cubic root of 42530203 is about 349.0592505375.

Adding to 42530203 its reverse (30203524), we get a palindrome (72733727).

It can be divided in two parts, 425 and 30203, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 42530203 in words is "forty-two million, five hundred thirty thousand, two hundred three".