42090201 has 12 divisors (see below), whose sum is σ = 62440612. Its totient is φ = 27301536.

The previous prime is 42090199. The next prime is 42090227. The reversal of 42090201 is 10209024.

42090201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24651225 + 17438976 = 4965^2 + 4176^2 .

It is not a de Polignac number, because 42090201 - 2¹ = 42090199 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42090101) 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 11 ways as a sum of consecutive naturals, for example, 62866 + ... + 63531.

Almost surely, 2^42090201 is an apocalyptic number.

It is an amenable number.

42090201 is a deficient number, since it is larger than the sum of its proper divisors (20350411).

42090201 is a wasteful number, since it uses less digits than its factorization.

42090201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126440 (or 126437 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 42090201 is about 6487.6961242031. The cubic root of 42090201 is about 347.8513286861.

Adding to 42090201 its reverse (10209024), we get a palindrome (52299225).

The spelling of 42090201 in words is "forty-two million, ninety thousand, two hundred one".