126600001 has 12 divisors (see below), whose sum is σ = 143648512. Its totient is φ = 111375000.

The previous prime is 126599989. The next prime is 126600011. The reversal of 126600001 is 100006621.

It is not a de Polignac number, because 126600001 - 2⁷ = 126599873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126600011) 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 11 ways as a sum of consecutive naturals, for example, 13125 + ... + 20626.

Almost surely, 2^126600001 is an apocalyptic number.

126600001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126600001 is a deficient number, since it is larger than the sum of its proper divisors (17048511).

126600001 is a wasteful number, since it uses less digits than its factorization.

126600001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33804 (or 33793 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 126600001 is about 11251.6665876660. Note that the first 3 decimals coincide. The cubic root of 126600001 is about 502.1242966129.

Adding to 126600001 its reverse (100006621), we get a palindrome (226606622).

The spelling of 126600001 in words is "one hundred twenty-six million, six hundred thousand, one".