42264641 has 4 divisors (see below), whose sum is σ = 42652500. Its totient is φ = 41876784.

The previous prime is 42264631. The next prime is 42264647. The reversal of 42264641 is 14646224.

It is a happy number.

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 28729600 + 13535041 = 5360^2 + 3679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42264641 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 (42264647) 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, 193766 + ... + 193983.

It is an arithmetic number, because the mean of its divisors is an integer number (10663125).

Almost surely, 2^42264641 is an apocalyptic number.

It is an amenable number.

42264641 is a deficient number, since it is larger than the sum of its proper divisors (387859).

42264641 is a wasteful number, since it uses less digits than its factorization.

42264641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387858.

The product of its digits is 9216, while the sum is 29.

The square root of 42264641 is about 6501.1261332172. The cubic root of 42264641 is about 348.3312151353.

The spelling of 42264641 in words is "forty-two million, two hundred sixty-four thousand, six hundred forty-one".