126889133 has 4 divisors (see below), whose sum is σ = 145016160. Its totient is φ = 108762108.

The previous prime is 126889109. The next prime is 126889153. The reversal of 126889133 is 331988621.

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 not a de Polignac number, because 126889133 - 2¹⁸ = 126626989 is a prime.

It is a super-2 number, since 2×126889133² = 32201704146983378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126889153) 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 3 ways as a sum of consecutive naturals, for example, 9063503 + ... + 9063516.

It is an arithmetic number, because the mean of its divisors is an integer number (36254040).

Almost surely, 2^126889133 is an apocalyptic number.

It is an amenable number.

126889133 is a deficient number, since it is larger than the sum of its proper divisors (18127027).

126889133 is an equidigital number, since it uses as much as digits as its factorization.

126889133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18127026.

The product of its digits is 62208, while the sum is 41.

The square root of 126889133 is about 11264.5076678921. The cubic root of 126889133 is about 502.5062603281.

The spelling of 126889133 in words is "one hundred twenty-six million, eight hundred eighty-nine thousand, one hundred thirty-three".