40341221 has 6 divisors (see below), whose sum is σ = 42854130. Its totient is φ = 37967936.

The previous prime is 40341209. The next prime is 40341239. The reversal of 40341221 is 12214304.

It can be written as a sum of positive squares in 3 ways, for example, as 24453025 + 15888196 = 4945^2 + 3986^2 .

It is not a de Polignac number, because 40341221 - 2¹⁰ = 40340197 is a prime.

It is a super-2 number, since 2×40341221² = 3254828223541682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 40341221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40341251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69506 + ... + 70083.

It is an arithmetic number, because the mean of its divisors is an integer number (7142355).

Almost surely, 2^40341221 is an apocalyptic number.

It is an amenable number.

40341221 is a deficient number, since it is larger than the sum of its proper divisors (2512909).

40341221 is a wasteful number, since it uses less digits than its factorization.

40341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139623 (or 139606 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40341221 is about 6351.4739234291. The cubic root of 40341221 is about 342.9649033213.

Adding to 40341221 its reverse (12214304), we get a palindrome (52555525).

The spelling of 40341221 in words is "forty million, three hundred forty-one thousand, two hundred twenty-one".