126025121 has 4 divisors (see below), whose sum is σ = 128161200. Its totient is φ = 123889044.

The previous prime is 126025117. The next prime is 126025139. The reversal of 126025121 is 121520621.

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 126025121 - 2² = 126025117 is a prime.

It is a super-2 number, since 2×126025121² = 31764662246129282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126025093 and 126025102.

It is not an unprimeable number, because it can be changed into a prime (126025321) 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, 1067951 + ... + 1068068.

It is an arithmetic number, because the mean of its divisors is an integer number (32040300).

Almost surely, 2^126025121 is an apocalyptic number.

It is an amenable number.

126025121 is a deficient number, since it is larger than the sum of its proper divisors (2136079).

126025121 is an equidigital number, since it uses as much as digits as its factorization.

126025121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136078.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 126025121 is about 11226.0910828302. The cubic root of 126025121 is about 501.3631084935.

Adding to 126025121 its reverse (121520621), we get a palindrome (247545742).

It can be divided in two parts, 126025 and 121, that multiplied together give a square (15249025 = 3905²).

The spelling of 126025121 in words is "one hundred twenty-six million, twenty-five thousand, one hundred twenty-one".