126512645 has 16 divisors (see below), whose sum is σ = 179487360. Its totient is φ = 83759424.

The previous prime is 126512629. The next prime is 126512647. The reversal of 126512645 is 546215621.

It is not a de Polignac number, because 126512645 - 2⁴ = 126512629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126512647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61307 + ... + 63336.

It is an arithmetic number, because the mean of its divisors is an integer number (11217960).

Almost surely, 2^126512645 is an apocalyptic number.

It is an amenable number.

126512645 is a deficient number, since it is larger than the sum of its proper divisors (52974715).

126512645 is a wasteful number, since it uses less digits than its factorization.

126512645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124684.

The product of its digits is 14400, while the sum is 32.

The square root of 126512645 is about 11247.7840039716. The cubic root of 126512645 is about 502.0087788077.

The spelling of 126512645 in words is "one hundred twenty-six million, five hundred twelve thousand, six hundred forty-five".