126500869 has 4 divisors (see below), whose sum is σ = 138000960. Its totient is φ = 115000780.

The previous prime is 126500849. The next prime is 126500873. The reversal of 126500869 is 968005621.

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 126500869 - 2⁷ = 126500741 is a prime.

It is a super-2 number, since 2×126500869² = 32004939715510322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126500809) 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, 5750029 + ... + 5750050.

It is an arithmetic number, because the mean of its divisors is an integer number (34500240).

Almost surely, 2^126500869 is an apocalyptic number.

It is an amenable number.

126500869 is a deficient number, since it is larger than the sum of its proper divisors (11500091).

126500869 is a wasteful number, since it uses less digits than its factorization.

126500869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500090.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 126500869 is about 11247.2605108978. The cubic root of 126500869 is about 501.9932023968.

The spelling of 126500869 in words is "one hundred twenty-six million, five hundred thousand, eight hundred sixty-nine".