126270122509 has 4 divisors (see below), whose sum is σ = 126271573920. Its totient is φ = 126268671100.

The previous prime is 126270122483. The next prime is 126270122557. The reversal of 126270122509 is 905221072621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126270122509 - 2⁵ = 126270122477 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 (126270122609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586279 + ... + 772180.

It is an arithmetic number, because the mean of its divisors is an integer number (31567893480).

Almost surely, 2^126270122509 is an apocalyptic number.

It is an amenable number.

126270122509 is a deficient number, since it is larger than the sum of its proper divisors (1451411).

126270122509 is an equidigital number, since it uses as much as digits as its factorization.

126270122509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451410.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 126270122509 in words is "one hundred twenty-six billion, two hundred seventy million, one hundred twenty-two thousand, five hundred nine".