42261047 has 4 divisors (see below), whose sum is σ = 42367896. Its totient is φ = 42154200.

The previous prime is 42261013. The next prime is 42261049. The reversal of 42261047 is 74016224.

42261047 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.

It is a cyclic number.

It is not a de Polignac number, because 42261047 - 2¹⁴ = 42244663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42261049) 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, 52829 + ... + 53622.

It is an arithmetic number, because the mean of its divisors is an integer number (10591974).

Almost surely, 2^42261047 is an apocalyptic number.

42261047 is a deficient number, since it is larger than the sum of its proper divisors (106849).

42261047 is a wasteful number, since it uses less digits than its factorization.

42261047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106848.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42261047 is about 6500.8497136913. The cubic root of 42261047 is about 348.3213413350.

The spelling of 42261047 in words is "forty-two million, two hundred sixty-one thousand, forty-seven".