40017000243 has 8 divisors (see below), whose sum is σ = 58206545856. Its totient is φ = 24252727400.

The previous prime is 40017000209. The next prime is 40017000263. The reversal of 40017000243 is 34200071004.

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

It is a de Polignac number, because none of the positive numbers 2^k-40017000243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40017000203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606318153 + ... + 606318218.

It is an arithmetic number, because the mean of its divisors is an integer number (7275818232).

Almost surely, 2^40017000243 is an apocalyptic number.

40017000243 is a deficient number, since it is larger than the sum of its proper divisors (18189545613).

40017000243 is a wasteful number, since it uses less digits than its factorization.

40017000243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212636385.

The product of its (nonzero) digits is 672, while the sum is 21.

Adding to 40017000243 its reverse (34200071004), we get a palindrome (74217071247).

The spelling of 40017000243 in words is "forty billion, seventeen million, two hundred forty-three", and thus it is an aban number.