126308729003 has 4 divisors (see below), whose sum is σ = 126309440088. Its totient is φ = 126308017920.

The previous prime is 126308728963. The next prime is 126308729039. The reversal of 126308729003 is 300927803621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 300927803621 = 811 ⋅371057711.

It is a cyclic number.

It is not a de Polignac number, because 126308729003 - 2⁸ = 126308728747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126308729303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162668 + ... + 528278.

It is an arithmetic number, because the mean of its divisors is an integer number (31577360022).

Almost surely, 2^126308729003 is an apocalyptic number.

126308729003 is a deficient number, since it is larger than the sum of its proper divisors (711085).

126308729003 is an equidigital number, since it uses as much as digits as its factorization.

126308729003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711084.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 126308729003 in words is "one hundred twenty-six billion, three hundred eight million, seven hundred twenty-nine thousand, three".