126012207 has 4 divisors (see below), whose sum is σ = 168016280. Its totient is φ = 84008136.

The previous prime is 126012197. The next prime is 126012223. The reversal of 126012207 is 702210621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 126012207 - 2⁴ = 126012191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126012247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21002032 + ... + 21002037.

It is an arithmetic number, because the mean of its divisors is an integer number (42004070).

Almost surely, 2^126012207 is an apocalyptic number.

126012207 is a deficient number, since it is larger than the sum of its proper divisors (42004073).

126012207 is an equidigital number, since it uses as much as digits as its factorization.

126012207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42004072.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 126012207 is about 11225.5158901495. The cubic root of 126012207 is about 501.3459827429.

Adding to 126012207 its reverse (702210621), we get a palindrome (828222828).

The spelling of 126012207 in words is "one hundred twenty-six million, twelve thousand, two hundred seven".