40240237 has 2 divisors, whose sum is σ = 40240238. Its totient is φ = 40240236.

The previous prime is 40240223. The next prime is 40240243. The reversal of 40240237 is 73204204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37871716 + 2368521 = 6154^2 + 1539^2 .

It is a cyclic number.

It is not a de Polignac number, because 40240237 - 2¹¹ = 40238189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40240247) 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 as a sum of consecutive naturals, namely, 20120118 + 20120119.

It is an arithmetic number, because the mean of its divisors is an integer number (20120119).

Almost surely, 2^40240237 is an apocalyptic number.

It is an amenable number.

40240237 is a deficient number, since it is larger than the sum of its proper divisors (1).

40240237 is an equidigital number, since it uses as much as digits as its factorization.

40240237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40240237 is about 6343.5192913713. The cubic root of 40240237 is about 342.6784890259.

The spelling of 40240237 in words is "forty million, two hundred forty thousand, two hundred thirty-seven".