7126505 has 4 divisors (see below), whose sum is σ = 8551812. Its totient is φ = 5701200.

The previous prime is 7126453. The next prime is 7126507. The reversal of 7126505 is 5056217.

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 2334784 + 4791721 = 1528^2 + 2189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7126505 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7126507) 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, 712646 + ... + 712655.

It is an arithmetic number, because the mean of its divisors is an integer number (2137953).

Almost surely, 2^7126505 is an apocalyptic number.

It is an amenable number.

7126505 is a deficient number, since it is larger than the sum of its proper divisors (1425307).

7126505 is a wasteful number, since it uses less digits than its factorization.

7126505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425306.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 7126505 is about 2669.5514604517. The cubic root of 7126505 is about 192.4386041345.

The spelling of 7126505 in words is "seven million, one hundred twenty-six thousand, five hundred five".