40320303243021 has 12 divisors (see below), whose sum is σ = 58246653104640. Its totient is φ = 26877333660360.

The previous prime is 40320303242977. The next prime is 40320303243037. The reversal of 40320303243021 is 12034230302304.

40320303243021 is a `hidden beast` number, since 4 + 0 + 3 + 2 + 0 + 30 + 324 + 302 + 1 = 666.

It is not a de Polignac number, because 40320303243021 - 2³⁴ = 40303123373837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320303203021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238952781 + ... + 239121458.

It is an arithmetic number, because the mean of its divisors is an integer number (4853887758720).

Almost surely, 2^{40320303243021} is an apocalyptic number.

It is an amenable number.

40320303243021 is a deficient number, since it is larger than the sum of its proper divisors (17926349861619).

40320303243021 is a wasteful number, since it uses less digits than its factorization.

40320303243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478083616 (or 478083613 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 40320303243021 its reverse (12034230302304), we get a palindrome (52354533545325).

The spelling of 40320303243021 in words is "forty trillion, three hundred twenty billion, three hundred three million, two hundred forty-three thousand, twenty-one".