404540141 has 2 divisors, whose sum is σ = 404540142. Its totient is φ = 404540140.

The previous prime is 404540137. The next prime is 404540207. The reversal of 404540141 is 141045404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312936100 + 91604041 = 17690^2 + 9571^2 .

It is a cyclic number.

It is not a de Polignac number, because 404540141 - 2² = 404540137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404540341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202270070 + 202270071.

It is an arithmetic number, because the mean of its divisors is an integer number (202270071).

Almost surely, 2^404540141 is an apocalyptic number.

It is an amenable number.

404540141 is a deficient number, since it is larger than the sum of its proper divisors (1).

404540141 is an equidigital number, since it uses as much as digits as its factorization.

404540141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 404540141 is about 20113.1832637203. The cubic root of 404540141 is about 739.5834891306.

Adding to 404540141 its reverse (141045404), we get a palindrome (545585545).

The spelling of 404540141 in words is "four hundred four million, five hundred forty thousand, one hundred forty-one".