126443633 has 2 divisors, whose sum is σ = 126443634. Its totient is φ = 126443632.

The previous prime is 126443623. The next prime is 126443657. The reversal of 126443633 is 336344621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78446449 + 47997184 = 8857^2 + 6928^2 .

It is an emirp because it is prime and its reverse (336344621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126443633 - 2¹⁰ = 126442609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126443633.

It is not a weakly prime, because it can be changed into another prime (126443623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63221816 + 63221817.

It is an arithmetic number, because the mean of its divisors is an integer number (63221817).

Almost surely, 2^126443633 is an apocalyptic number.

It is an amenable number.

126443633 is a deficient number, since it is larger than the sum of its proper divisors (1).

126443633 is an equidigital number, since it uses as much as digits as its factorization.

126443633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 126443633 is about 11244.7157812014. The cubic root of 126443633 is about 501.9174811321.

The spelling of 126443633 in words is "one hundred twenty-six million, four hundred forty-three thousand, six hundred thirty-three".