20041237 has 2 divisors, whose sum is σ = 20041238. Its totient is φ = 20041236.

The previous prime is 20041213. The next prime is 20041243. The reversal of 20041237 is 73214002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14092516 + 5948721 = 3754^2 + 2439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20041237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20041037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020618 + 10020619.

It is an arithmetic number, because the mean of its divisors is an integer number (10020619).

Almost surely, 2^20041237 is an apocalyptic number.

It is an amenable number.

20041237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041237 is an equidigital number, since it uses as much as digits as its factorization.

20041237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20041237 is about 4476.7440176986. The cubic root of 20041237 is about 271.6281909871.

Adding to 20041237 its reverse (73214002), we get a palindrome (93255239).

The spelling of 20041237 in words is "twenty million, forty-one thousand, two hundred thirty-seven".