42644347 has 8 divisors (see below), whose sum is σ = 46203696. Its totient is φ = 39201792.

The previous prime is 42644333. The next prime is 42644389. The reversal of 42644347 is 74344624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42644347 - 2⁷ = 42644219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42644947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28438 + ... + 29899.

It is an arithmetic number, because the mean of its divisors is an integer number (5775462).

Almost surely, 2^42644347 is an apocalyptic number.

42644347 is a deficient number, since it is larger than the sum of its proper divisors (3559349).

42644347 is a wasteful number, since it uses less digits than its factorization.

42644347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58397.

The product of its digits is 64512, while the sum is 34.

The square root of 42644347 is about 6530.2639303477. The cubic root of 42644347 is about 349.3712439393.

The spelling of 42644347 in words is "forty-two million, six hundred forty-four thousand, three hundred forty-seven".