40743161 has 2 divisors, whose sum is σ = 40743162. Its totient is φ = 40743160.

The previous prime is 40743149. The next prime is 40743187. The reversal of 40743161 is 16134704.

It is an a-pointer prime, because the next prime (40743187) can be obtained adding 40743161 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38987536 + 1755625 = 6244^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743161 - 2²² = 36548857 is a prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 40743161.

It is not a weakly prime, because it can be changed into another prime (40743191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371580 + 20371581.

It is an arithmetic number, because the mean of its divisors is an integer number (20371581).

Almost surely, 2^40743161 is an apocalyptic number.

It is an amenable number.

40743161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743161 is an equidigital number, since it uses as much as digits as its factorization.

40743161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40743161 is about 6383.0369731030. The cubic root of 40743161 is about 344.1001854625.

Adding to 40743161 its reverse (16134704), we get a palindrome (56877865).

It can be divided in two parts, 40743 and 161, that added together give a palindrome (40904).

The spelling of 40743161 in words is "forty million, seven hundred forty-three thousand, one hundred sixty-one".