42520403 has 8 divisors (see below), whose sum is σ = 43754256. Its totient is φ = 41296000.

The previous prime is 42520397. The next prime is 42520433. The reversal of 42520403 is 30402524.

42520403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42520403 - 2¹⁴ = 42504019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42520433) 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 7 ways as a sum of consecutive naturals, for example, 7328 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (5469282).

Almost surely, 2^42520403 is an apocalyptic number.

42520403 is a deficient number, since it is larger than the sum of its proper divisors (1233853).

42520403 is a wasteful number, since it uses less digits than its factorization.

42520403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42520403 is about 6520.7670561062. The cubic root of 42520403 is about 349.0324378790.

Adding to 42520403 its reverse (30402524), we get a palindrome (72922927).

The spelling of 42520403 in words is "forty-two million, five hundred twenty thousand, four hundred three".