40534321 has 4 divisors (see below), whose sum is σ = 40612644. Its totient is φ = 40456000.

The previous prime is 40534313. The next prime is 40534339. The reversal of 40534321 is 12343504.

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 16719921 + 23814400 = 4089^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 40534321 - 2³ = 40534313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40534292 and 40534301.

It is not an unprimeable number, because it can be changed into a prime (40534381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38380 + ... + 39421.

It is an arithmetic number, because the mean of its divisors is an integer number (10153161).

Almost surely, 2^40534321 is an apocalyptic number.

It is an amenable number.

40534321 is a deficient number, since it is larger than the sum of its proper divisors (78323).

40534321 is an equidigital number, since it uses as much as digits as its factorization.

40534321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78322.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40534321 is about 6366.6569720694. The cubic root of 40534321 is about 343.5112521360.

Adding to 40534321 its reverse (12343504), we get a palindrome (52877825).

It can be divided in two parts, 40 and 534321, that added together give a square (534361 = 731²).

The spelling of 40534321 in words is "forty million, five hundred thirty-four thousand, three hundred twenty-one".