40024012321 has 2 divisors, whose sum is σ = 40024012322. Its totient is φ = 40024012320.

The previous prime is 40024012291. The next prime is 40024012333. The reversal of 40024012321 is 12321042004.

40024012321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32809888225 + 7214124096 = 181135^2 + 84936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40024012321 is a prime.

It is not a weakly prime, because it can be changed into another prime (40024012351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012006160 + 20012006161.

It is an arithmetic number, because the mean of its divisors is an integer number (20012006161).

Almost surely, 2^40024012321 is an apocalyptic number.

It is an amenable number.

40024012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40024012321 is an equidigital number, since it uses as much as digits as its factorization.

40024012321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40024012321 its reverse (12321042004), we get a palindrome (52345054325).

The spelling of 40024012321 in words is "forty billion, twenty-four million, twelve thousand, three hundred twenty-one".