126811869 has 8 divisors (see below), whose sum is σ = 169217472. Its totient is φ = 84473760.

The previous prime is 126811847. The next prime is 126811873. The reversal of 126811869 is 968118621.

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

It is not a de Polignac number, because 126811869 - 2⁸ = 126811613 is a prime.

It is a super-2 number, since 2×126811869² = 32162500238546322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126811869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126811819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12312 + ... + 20129.

It is an arithmetic number, because the mean of its divisors is an integer number (21152184).

Almost surely, 2^126811869 is an apocalyptic number.

It is an amenable number.

126811869 is a deficient number, since it is larger than the sum of its proper divisors (42405603).

126811869 is a wasteful number, since it uses less digits than its factorization.

126811869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33747.

The product of its digits is 41472, while the sum is 42.

The square root of 126811869 is about 11261.0776127332. The cubic root of 126811869 is about 502.4042460056.

The spelling of 126811869 in words is "one hundred twenty-six million, eight hundred eleven thousand, eight hundred sixty-nine".