126181712 has 10 divisors (see below), whose sum is σ = 244477098. Its totient is φ = 63090848.

The previous prime is 126181709. The next prime is 126181747. The reversal of 126181712 is 217181621.

It can be written as a sum of positive squares in only one way, i.e., 91087936 + 35093776 = 9544^2 + 5924^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3943163 + ... + 3943194.

Almost surely, 2^126181712 is an apocalyptic number.

It is an amenable number.

126181712 is a deficient number, since it is larger than the sum of its proper divisors (118295386).

126181712 is an equidigital number, since it uses as much as digits as its factorization.

126181712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7886365 (or 7886359 counting only the distinct ones).

The product of its digits is 1344, while the sum is 29.

The square root of 126181712 is about 11233.0633399799. The cubic root of 126181712 is about 501.5706767824.

Subtracting 126181712 from its reverse (217181621), we obtain a palindrome (90999909).

The spelling of 126181712 in words is "one hundred twenty-six million, one hundred eighty-one thousand, seven hundred twelve".