126331237 has 2 divisors, whose sum is σ = 126331238. Its totient is φ = 126331236.

The previous prime is 126331217. The next prime is 126331241. The reversal of 126331237 is 732133621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64016001 + 62315236 = 8001^2 + 7894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126331237 is a prime.

It is a Chen prime.

It is equal to p_7181623 and since 126331237 and 7181623 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126331207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63165618 + 63165619.

It is an arithmetic number, because the mean of its divisors is an integer number (63165619).

Almost surely, 2^126331237 is an apocalyptic number.

It is an amenable number.

126331237 is a deficient number, since it is larger than the sum of its proper divisors (1).

126331237 is an equidigital number, since it uses as much as digits as its factorization.

126331237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 126331237 is about 11239.7169448345. The cubic root of 126331237 is about 501.7687185584.

Adding to 126331237 its reverse (732133621), we get a palindrome (858464858).

The spelling of 126331237 in words is "one hundred twenty-six million, three hundred thirty-one thousand, two hundred thirty-seven".