40243004100 has 108 divisors (see below), whose sum is σ = 135842535556. Its totient is φ = 9905967360.

The previous prime is 40243004099. The next prime is 40243004101. The reversal of 40243004100 is 140034204.

It is an interprime number because it is at equal distance from previous prime (40243004099) and next prime (40243004101).

It can be written as a sum of positive squares in 6 ways, for example, as 6227103744 + 34015900356 = 78912^2 + 184434^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40243004101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1708087 + ... + 1731486.

Almost surely, 2^40243004100 is an apocalyptic number.

It is an amenable number.

40243004100 is an abundant number, since it is smaller than the sum of its proper divisors (95599531456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40243004100 is a wasteful number, since it uses less digits than its factorization.

40243004100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439606 (or 3439596 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 40243004100 its reverse (140034204), we get a palindrome (40383038304).

The spelling of 40243004100 in words is "forty billion, two hundred forty-three million, four thousand, one hundred".