126052505 has 8 divisors (see below), whose sum is σ = 152651400. Its totient is φ = 99916416.

The previous prime is 126052499. The next prime is 126052513. The reversal of 126052505 is 505250621.

It can be written as a sum of positive squares in 4 ways, for example, as 6390784 + 119661721 = 2528^2 + 10939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126052505 - 2⁸ = 126052249 is a prime.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 115100 + ... + 116189.

It is an arithmetic number, because the mean of its divisors is an integer number (19081425).

Almost surely, 2^126052505 is an apocalyptic number.

It is an amenable number.

126052505 is a deficient number, since it is larger than the sum of its proper divisors (26598895).

126052505 is a wasteful number, since it uses less digits than its factorization.

126052505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231403.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 126052505 is about 11227.3106753131. The cubic root of 126052505 is about 501.3994195955.

The spelling of 126052505 in words is "one hundred twenty-six million, fifty-two thousand, five hundred five".