126505147 has 2 divisors, whose sum is σ = 126505148. Its totient is φ = 126505146.

The previous prime is 126505139. The next prime is 126505187. The reversal of 126505147 is 741505621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126505147 - 2³ = 126505139 is a prime.

It is not a weakly prime, because it can be changed into another prime (126505187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63252573 + 63252574.

It is an arithmetic number, because the mean of its divisors is an integer number (63252574).

Almost surely, 2^126505147 is an apocalyptic number.

126505147 is a deficient number, since it is larger than the sum of its proper divisors (1).

126505147 is an equidigital number, since it uses as much as digits as its factorization.

126505147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 126505147 is about 11247.4506889339. The cubic root of 126505147 is about 501.9988611266.

The spelling of 126505147 in words is "one hundred twenty-six million, five hundred five thousand, one hundred forty-seven".