42520201 has 4 divisors (see below), whose sum is σ = 42544132. Its totient is φ = 42496272.

The previous prime is 42520199. The next prime is 42520211. The reversal of 42520201 is 10202524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 14175225 = 5324^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 42520201 - 2¹ = 42520199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42520211) by changing a digit.

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, 9066 + ... + 12931.

It is an arithmetic number, because the mean of its divisors is an integer number (10636033).

Almost surely, 2^42520201 is an apocalyptic number.

It is an amenable number.

42520201 is a deficient number, since it is larger than the sum of its proper divisors (23931).

42520201 is a wasteful number, since it uses less digits than its factorization.

42520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42520201 is about 6520.7515671125. The cubic root of 42520201 is about 349.0318851666.

Adding to 42520201 its reverse (10202524), we get a palindrome (52722725).

The spelling of 42520201 in words is "forty-two million, five hundred twenty thousand, two hundred one".