40021243200243 has 24 divisors (see below), whose sum is σ = 58899677316480. Its totient is φ = 26177199509760.

The previous prime is 40021243200233. The next prime is 40021243200259. The reversal of 40021243200243 is 34200234212004.

40021243200243 is a `hidden beast` number, since 4 + 0 + 0 + 212 + 4 + 3 + 200 + 243 = 666.

40021243200243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40021243200243 - 2⁶ = 40021243200179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40021243200233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73553758 + ... + 74095868.

It is an arithmetic number, because the mean of its divisors is an integer number (2454153221520).

Almost surely, 2^{40021243200243} is an apocalyptic number.

40021243200243 is a deficient number, since it is larger than the sum of its proper divisors (18878434116237).

40021243200243 is a wasteful number, since it uses less digits than its factorization.

40021243200243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696939 (or 696936 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40021243200243 its reverse (34200234212004), we get a palindrome (74221477412247).

The spelling of 40021243200243 in words is "forty trillion, twenty-one billion, two hundred forty-three million, two hundred thousand, two hundred forty-three".