126533121 has 16 divisors (see below), whose sum is σ = 198206400. Its totient is φ = 70787520.

The previous prime is 126533087. The next prime is 126533123. The reversal of 126533121 is 121335621.

It is a de Polignac number, because none of the positive numbers 2^k-126533121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126533091 and 126533100.

It is not an unprimeable number, because it can be changed into a prime (126533123) 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 15 ways as a sum of consecutive naturals, for example, 147046 + ... + 147903.

It is an arithmetic number, because the mean of its divisors is an integer number (12387900).

Almost surely, 2^126533121 is an apocalyptic number.

126533121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126533121 is a deficient number, since it is larger than the sum of its proper divisors (71673279).

126533121 is a wasteful number, since it uses less digits than its factorization.

126533121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294976.

The product of its digits is 1080, while the sum is 24.

The square root of 126533121 is about 11248.6941908828. The cubic root of 126533121 is about 502.0358606256.

Adding to 126533121 its reverse (121335621), we get a palindrome (247868742).

The spelling of 126533121 in words is "one hundred twenty-six million, five hundred thirty-three thousand, one hundred twenty-one".