40100643 has 16 divisors (see below), whose sum is σ = 64809600. Its totient is φ = 24303240.

The previous prime is 40100633. The next prime is 40100653. The reversal of 40100643 is 34600104.

40100643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40100633) and next prime (40100653).

It is not a de Polignac number, because 40100643 - 2⁵ = 40100611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40100623) 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 15 ways as a sum of consecutive naturals, for example, 67213 + ... + 67806.

It is an arithmetic number, because the mean of its divisors is an integer number (4050600).

Almost surely, 2^40100643 is an apocalyptic number.

40100643 is a deficient number, since it is larger than the sum of its proper divisors (24708957).

40100643 is a wasteful number, since it uses less digits than its factorization.

40100643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135039 (or 135033 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40100643 is about 6332.5068495818. The cubic root of 40100643 is about 342.2817776257.

Adding to 40100643 its reverse (34600104), we get a palindrome (74700747).

The spelling of 40100643 in words is "forty million, one hundred thousand, six hundred forty-three".