40200321 has 32 divisors (see below), whose sum is σ = 62795520. Its totient is φ = 22404096.

The previous prime is 40200301. The next prime is 40200331. The reversal of 40200321 is 12300204.

It is not a de Polignac number, because 40200321 - 2¹³ = 40192129 is a prime.

It is a super-3 number, since 3×40200321³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40200297 and 40200306.

It is not an unprimeable number, because it can be changed into a prime (40200301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255975 + ... + 256131.

It is an arithmetic number, because the mean of its divisors is an integer number (1962360).

Almost surely, 2^40200321 is an apocalyptic number.

It is an amenable number.

40200321 is a deficient number, since it is larger than the sum of its proper divisors (22595199).

40200321 is a wasteful number, since it uses less digits than its factorization.

40200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40200321 is about 6340.3723076804. The cubic root of 40200321 is about 342.5651457589.

Adding to 40200321 its reverse (12300204), we get a palindrome (52500525).

The spelling of 40200321 in words is "forty million, two hundred thousand, three hundred twenty-one".