126443507 has 2 divisors, whose sum is σ = 126443508. Its totient is φ = 126443506.

The previous prime is 126443503. The next prime is 126443533. The reversal of 126443507 is 705344621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126443507 - 2² = 126443503 is a prime.

It is not a weakly prime, because it can be changed into another prime (126443503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63221753 + 63221754.

It is an arithmetic number, because the mean of its divisors is an integer number (63221754).

Almost surely, 2^126443507 is an apocalyptic number.

126443507 is a deficient number, since it is larger than the sum of its proper divisors (1).

126443507 is an equidigital number, since it uses as much as digits as its factorization.

126443507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 126443507 is about 11244.7101785684. The cubic root of 126443507 is about 501.9173144132.

The spelling of 126443507 in words is "one hundred twenty-six million, four hundred forty-three thousand, five hundred seven".