42636043 has 8 divisors (see below), whose sum is σ = 44669088. Its totient is φ = 40617984.

The previous prime is 42636031. The next prime is 42636071. The reversal of 42636043 is 34063624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42636043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42636343) 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 7 ways as a sum of consecutive naturals, for example, 2305 + ... + 9517.

It is an arithmetic number, because the mean of its divisors is an integer number (5583636).

Almost surely, 2^42636043 is an apocalyptic number.

42636043 is a deficient number, since it is larger than the sum of its proper divisors (2033045).

42636043 is a wasteful number, since it uses less digits than its factorization.

42636043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 42636043 is about 6529.6280904811. The cubic root of 42636043 is about 349.3485651448.

Adding to 42636043 its reverse (34063624), we get a palindrome (76699667).

The spelling of 42636043 in words is "forty-two million, six hundred thirty-six thousand, forty-three".