126012005 has 16 divisors (see below), whose sum is σ = 176079744. Its totient is φ = 84776640.

The previous prime is 126011987. The next prime is 126012043. The reversal of 126012005 is 500210621.

It is not a de Polignac number, because 126012005 - 2⁸ = 126011749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 32111 + ... + 35820.

It is an arithmetic number, because the mean of its divisors is an integer number (11004984).

Almost surely, 2^126012005 is an apocalyptic number.

It is an amenable number.

126012005 is a deficient number, since it is larger than the sum of its proper divisors (50067739).

126012005 is an equidigital number, since it uses as much as digits as its factorization.

126012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67996.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 126012005 is about 11225.5068927866. The cubic root of 126012005 is about 501.3457148537.

Adding to 126012005 its reverse (500210621), we get a palindrome (626222626).

The spelling of 126012005 in words is "one hundred twenty-six million, twelve thousand, five".