126235643 has 2 divisors, whose sum is σ = 126235644. Its totient is φ = 126235642.

The previous prime is 126235607. The next prime is 126235649. The reversal of 126235643 is 346532621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126235643 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126235649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63117821 + 63117822.

It is an arithmetic number, because the mean of its divisors is an integer number (63117822).

Almost surely, 2^126235643 is an apocalyptic number.

126235643 is a deficient number, since it is larger than the sum of its proper divisors (1).

126235643 is an equidigital number, since it uses as much as digits as its factorization.

126235643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 126235643 is about 11235.4636308432. The cubic root of 126235643 is about 501.6421249472.

The spelling of 126235643 in words is "one hundred twenty-six million, two hundred thirty-five thousand, six hundred forty-three".