126406001 has 2 divisors, whose sum is σ = 126406002. Its totient is φ = 126406000.

The previous prime is 126405977. The next prime is 126406013. The reversal of 126406001 is 100604621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111851776 + 14554225 = 10576^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 126406001 - 2²² = 122211697 is a prime.

It is not a weakly prime, because it can be changed into another prime (126406051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63203000 + 63203001.

It is an arithmetic number, because the mean of its divisors is an integer number (63203001).

Almost surely, 2^126406001 is an apocalyptic number.

It is an amenable number.

126406001 is a deficient number, since it is larger than the sum of its proper divisors (1).

126406001 is an equidigital number, since it uses as much as digits as its factorization.

126406001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 126406001 is about 11243.0423373747. The cubic root of 126406001 is about 501.8676828351.

The spelling of 126406001 in words is "one hundred twenty-six million, four hundred six thousand, one".