126500003 has 8 divisors (see below), whose sum is σ = 148479072. Its totient is φ = 105497856.

The previous prime is 126499991. The next prime is 126500041. The reversal of 126500003 is 300005621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126500003 - 2¹² = 126495907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126500053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243950 + ... + 244467.

It is an arithmetic number, because the mean of its divisors is an integer number (18559884).

Almost surely, 2^126500003 is an apocalyptic number.

126500003 is a deficient number, since it is larger than the sum of its proper divisors (21979069).

126500003 is an equidigital number, since it uses as much as digits as its factorization.

126500003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488461.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 126500003 is about 11247.2220125683. Note that the first 3 decimals coincide. The cubic root of 126500003 is about 501.9920568787.

Adding to 126500003 its reverse (300005621), we get a palindrome (426505624).

The spelling of 126500003 in words is "one hundred twenty-six million, five hundred thousand, three".