126234865 has 8 divisors (see below), whose sum is σ = 151586280. Its totient is φ = 100918272.

The previous prime is 126234863. The next prime is 126234869. The reversal of 126234865 is 568432621.

It can be written as a sum of positive squares in 4 ways, for example, as 2313441 + 123921424 = 1521^2 + 11132^2 .

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 126234865 - 2¹ = 126234863 is a prime.

It is a super-2 number, since 2×126234865² = 31870482283136450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126234863) by changing a digit.

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, 81 + ... + 15889.

It is an arithmetic number, because the mean of its divisors is an integer number (18948285).

Almost surely, 2^126234865 is an apocalyptic number.

It is an amenable number.

126234865 is a deficient number, since it is larger than the sum of its proper divisors (25351415).

126234865 is a wasteful number, since it uses less digits than its factorization.

126234865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17411.

The product of its digits is 69120, while the sum is 37.

The square root of 126234865 is about 11235.4290082756. The cubic root of 126234865 is about 501.6410943920.

The spelling of 126234865 in words is "one hundred twenty-six million, two hundred thirty-four thousand, eight hundred sixty-five".