40321024 has 60 divisors (see below), whose sum is σ = 84932064. Its totient is φ = 19103744.

The previous prime is 40321019. The next prime is 40321031. The reversal of 40321024 is 42012304.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 40320989 and 40321007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376779 + ... + 376885.

Almost surely, 2^40321024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40321024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42466032).

40321024 is an abundant number, since it is smaller than the sum of its proper divisors (44611040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40321024 is an equidigital number, since it uses as much as digits as its factorization.

40321024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40321024 is about 6349.8837784640. The cubic root of 40321024 is about 342.9076581654.

Adding to 40321024 its reverse (42012304), we get a palindrome (82333328).

The spelling of 40321024 in words is "forty million, three hundred twenty-one thousand, twenty-four".