126178643 has 2 divisors, whose sum is σ = 126178644. Its totient is φ = 126178642.

The previous prime is 126178627. The next prime is 126178651. The reversal of 126178643 is 346871621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126178643 - 2⁴ = 126178627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126178597 and 126178606.

It is not a weakly prime, because it can be changed into another prime (126178543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63089321 + 63089322.

It is an arithmetic number, because the mean of its divisors is an integer number (63089322).

Almost surely, 2^126178643 is an apocalyptic number.

126178643 is a deficient number, since it is larger than the sum of its proper divisors (1).

126178643 is an equidigital number, since it uses as much as digits as its factorization.

126178643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 126178643 is about 11232.9267334920. The cubic root of 126178643 is about 501.5666103376.

The spelling of 126178643 in words is "one hundred twenty-six million, one hundred seventy-eight thousand, six hundred forty-three".