40332421 has 8 divisors (see below), whose sum is σ = 42570080. Its totient is φ = 38106288.

The previous prime is 40332419. The next prime is 40332433. The reversal of 40332421 is 12423304.

40332421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40332421 - 2¹ = 40332419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40332451) 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 7 ways as a sum of consecutive naturals, for example, 4870 + ... + 10216.

It is an arithmetic number, because the mean of its divisors is an integer number (5321260).

Almost surely, 2^40332421 is an apocalyptic number.

It is an amenable number.

40332421 is a deficient number, since it is larger than the sum of its proper divisors (2237659).

40332421 is a wasteful number, since it uses less digits than its factorization.

40332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763.

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

The square root of 40332421 is about 6350.7811330576. The cubic root of 40332421 is about 342.9399634826.

Adding to 40332421 its reverse (12423304), we get a palindrome (52755725).

The spelling of 40332421 in words is "forty million, three hundred thirty-two thousand, four hundred twenty-one".