40204002321 has 128 divisors (see below), whose sum is σ = 73123430400. Its totient is φ = 21310387200.

The previous prime is 40204002313. The next prime is 40204002403. The reversal of 40204002321 is 12320040204.

It is not a de Polignac number, because 40204002321 - 2³ = 40204002313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40204002294 and 40204002303.

It is not an unprimeable number, because it can be changed into a prime (40204002521) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 83932960 + ... + 83933438.

It is an arithmetic number, because the mean of its divisors is an integer number (571276800).

Almost surely, 2^40204002321 is an apocalyptic number.

It is an amenable number.

40204002321 is a deficient number, since it is larger than the sum of its proper divisors (32919428079).

40204002321 is a wasteful number, since it uses less digits than its factorization.

40204002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 830 counting only the distinct ones).

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

Adding to 40204002321 its reverse (12320040204), we get a palindrome (52524042525).

The spelling of 40204002321 in words is "forty billion, two hundred four million, two thousand, three hundred twenty-one".