42244647 has 4 divisors (see below), whose sum is σ = 56326200. Its totient is φ = 28163096.

The previous prime is 42244633. The next prime is 42244663. The reversal of 42244647 is 74644224.

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 42244647 - 2⁷ = 42244519 is a prime.

It is a super-2 number, since 2×42244647² = 3569220400309218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42244627) 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, 7040772 + ... + 7040777.

It is an arithmetic number, because the mean of its divisors is an integer number (14081550).

Almost surely, 2^42244647 is an apocalyptic number.

42244647 is a deficient number, since it is larger than the sum of its proper divisors (14081553).

42244647 is a wasteful number, since it uses less digits than its factorization.

42244647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14081552.

The product of its digits is 43008, while the sum is 33.

The square root of 42244647 is about 6499.5882177258. The cubic root of 42244647 is about 348.2762784896.

The spelling of 42244647 in words is "forty-two million, two hundred forty-four thousand, six hundred forty-seven".