42661201 has 4 divisors (see below), whose sum is σ = 46539504. Its totient is φ = 38782900.

The previous prime is 42661163. The next prime is 42661207. The reversal of 42661201 is 10216624.

42661201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42661201 - 2¹¹ = 42659153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42661207) 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 3 ways as a sum of consecutive naturals, for example, 1939135 + ... + 1939156.

It is an arithmetic number, because the mean of its divisors is an integer number (11634876).

Almost surely, 2^42661201 is an apocalyptic number.

It is an amenable number.

42661201 is a deficient number, since it is larger than the sum of its proper divisors (3878303).

42661201 is a wasteful number, since it uses less digits than its factorization.

42661201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878302.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42661201 is about 6531.5542560711. The cubic root of 42661201 is about 349.4172643210.

Adding to 42661201 its reverse (10216624), we get a palindrome (52877825).

The spelling of 42661201 in words is "forty-two million, six hundred sixty-one thousand, two hundred one".