40061321 has 4 divisors (see below), whose sum is σ = 40233492. Its totient is φ = 39889152.

The previous prime is 40061311. The next prime is 40061339. The reversal of 40061321 is 12316004.

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 9369721 + 30691600 = 3061^2 + 5540^2 .

It is a cyclic number.

It is not a de Polignac number, because 40061321 - 2¹⁴ = 40044937 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 40061321.

It is not an unprimeable number, because it can be changed into a prime (40061311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85736 + ... + 86201.

It is an arithmetic number, because the mean of its divisors is an integer number (10058373).

Almost surely, 2^40061321 is an apocalyptic number.

It is an amenable number.

40061321 is a deficient number, since it is larger than the sum of its proper divisors (172171).

40061321 is a wasteful number, since it uses less digits than its factorization.

40061321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172170.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40061321 is about 6329.4013145004. The cubic root of 40061321 is about 342.1698624980.

Adding to 40061321 its reverse (12316004), we get a palindrome (52377325).

The spelling of 40061321 in words is "forty million, sixty-one thousand, three hundred twenty-one".