40204200321 has 6 divisors (see below), whose sum is σ = 58072733810. Its totient is φ = 26802800208.

The previous prime is 40204200293. The next prime is 40204200331. The reversal of 40204200321 is 12300240204.

It can be written as a sum of positive squares in only one way, i.e., 35734609296 + 4469591025 = 189036^2 + 66855^2 .

It is not a de Polignac number, because 40204200321 - 2¹³ = 40204192129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40204200294 and 40204200303.

It is not an unprimeable number, because it can be changed into a prime (40204200331) 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 5 ways as a sum of consecutive naturals, for example, 2233566676 + ... + 2233566693.

Almost surely, 2^40204200321 is an apocalyptic number.

It is an amenable number.

40204200321 is a deficient number, since it is larger than the sum of its proper divisors (17868533489).

40204200321 is a wasteful number, since it uses less digits than its factorization.

40204200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467133375 (or 4467133372 counting only the distinct ones).

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

Adding to 40204200321 its reverse (12300240204), we get a palindrome (52504440525).

The spelling of 40204200321 in words is "forty billion, two hundred four million, two hundred thousand, three hundred twenty-one".