126318965 has 4 divisors (see below), whose sum is σ = 151582764. Its totient is φ = 101055168.

The previous prime is 126318949. The next prime is 126318979. The reversal of 126318965 is 569813621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 80174116 = 6793^2 + 8954^2 .

It is a cyclic number.

It is not a de Polignac number, because 126318965 - 2⁴ = 126318949 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12631892 + ... + 12631901.

It is an arithmetic number, because the mean of its divisors is an integer number (37895691).

Almost surely, 2^126318965 is an apocalyptic number.

It is an amenable number.

126318965 is a deficient number, since it is larger than the sum of its proper divisors (25263799).

126318965 is an equidigital number, since it uses as much as digits as its factorization.

126318965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25263798.

The product of its digits is 77760, while the sum is 41.

The square root of 126318965 is about 11239.1710103548. The cubic root of 126318965 is about 501.7524705180.

The spelling of 126318965 in words is "one hundred twenty-six million, three hundred eighteen thousand, nine hundred sixty-five".