126471491 has 2 divisors, whose sum is σ = 126471492. Its totient is φ = 126471490.

The previous prime is 126471487. The next prime is 126471509. The reversal of 126471491 is 194174621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126471491 - 2² = 126471487 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126471421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63235745 + 63235746.

It is an arithmetic number, because the mean of its divisors is an integer number (63235746).

Almost surely, 2^126471491 is an apocalyptic number.

126471491 is a deficient number, since it is larger than the sum of its proper divisors (1).

126471491 is an equidigital number, since it uses as much as digits as its factorization.

126471491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 126471491 is about 11245.9544281488. The cubic root of 126471491 is about 501.9543391642.

The spelling of 126471491 in words is "one hundred twenty-six million, four hundred seventy-one thousand, four hundred ninety-one".