40237 has 2 divisors, whose sum is σ = 40238. Its totient is φ = 40236.

The previous prime is 40231. The next prime is 40241. The reversal of 40237 is 73204.

40237 is nontrivially palindromic in base 5.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37636 + 2601 = 194^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 40237 - 2¹¹ = 38189 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 40237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20118 + 20119.

It is an arithmetic number, because the mean of its divisors is an integer number (20119).

2⁴⁰²³⁷ is an apocalyptic number.

It is an amenable number.

40237 is a deficient number, since it is larger than the sum of its proper divisors (1).

40237 is an equidigital number, since it uses as much as digits as its factorization.

40237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 40237 is about 200.5916249498. The cubic root of 40237 is about 34.2669300213.

The spelling of 40237 in words is "forty thousand, two hundred thirty-seven".