40421233 has 4 divisors (see below), whose sum is σ = 40792180. Its totient is φ = 40050288.

The previous prime is 40421221. The next prime is 40421239. The reversal of 40421233 is 33212404.

40421233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12616704 + 27804529 = 3552^2 + 5273^2 .

It is a cyclic number.

It is not a de Polignac number, because 40421233 - 2²⁵ = 6866801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40421233.

It is not an unprimeable number, because it can be changed into a prime (40421239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185310 + ... + 185527.

It is an arithmetic number, because the mean of its divisors is an integer number (10198045).

Almost surely, 2^40421233 is an apocalyptic number.

It is an amenable number.

40421233 is a deficient number, since it is larger than the sum of its proper divisors (370947).

40421233 is a wasteful number, since it uses less digits than its factorization.

40421233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370946.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40421233 is about 6357.7694988101. The cubic root of 40421233 is about 343.1914969059.

Adding to 40421233 its reverse (33212404), we get a palindrome (73633637).

The spelling of 40421233 in words is "forty million, four hundred twenty-one thousand, two hundred thirty-three".