126387129 has 16 divisors (see below), whose sum is σ = 194650560. Its totient is φ = 72092160.

The previous prime is 126387119. The next prime is 126387137. The reversal of 126387129 is 921783621.

It is not a de Polignac number, because 126387129 - 2⁴ = 126387113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126387119) 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, 112084 + ... + 113205.

It is an arithmetic number, because the mean of its divisors is an integer number (12165660).

Almost surely, 2^126387129 is an apocalyptic number.

It is an amenable number.

126387129 is a deficient number, since it is larger than the sum of its proper divisors (68263431).

126387129 is a wasteful number, since it uses less digits than its factorization.

126387129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225320.

The product of its digits is 36288, while the sum is 39.

The square root of 126387129 is about 11242.2030314347. The cubic root of 126387129 is about 501.8427058609.

The spelling of 126387129 in words is "one hundred twenty-six million, three hundred eighty-seven thousand, one hundred twenty-nine".