42644361 has 8 divisors (see below), whose sum is σ = 57708064. Its totient is φ = 28005120.

The previous prime is 42644333. The next prime is 42644389. The reversal of 42644361 is 16344624.

It is an interprime number because it is at equal distance from previous prime (42644333) and next prime (42644389).

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

It is not a de Polignac number, because 42644361 - 2⁹ = 42643849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42642361) 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, 105880 + ... + 106281.

It is an arithmetic number, because the mean of its divisors is an integer number (7213508).

Almost surely, 2^42644361 is an apocalyptic number.

It is an amenable number.

42644361 is a deficient number, since it is larger than the sum of its proper divisors (15063703).

42644361 is a wasteful number, since it uses less digits than its factorization.

42644361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212231.

The product of its digits is 13824, while the sum is 30.

The square root of 42644361 is about 6530.2650022798. The cubic root of 42644361 is about 349.3712821717.

Adding to 42644361 its reverse (16344624), we get a palindrome (58988985).

The spelling of 42644361 in words is "forty-two million, six hundred forty-four thousand, three hundred sixty-one".