130121445 has 16 divisors (see below), whose sum is σ = 210218112. Its totient is φ = 68723520.

The previous prime is 130121441. The next prime is 130121447. The reversal of 130121445 is 544121031.

It is not a de Polignac number, because 130121445 - 2² = 130121441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40566 + ... + 43655.

It is an arithmetic number, because the mean of its divisors is an integer number (13138632).

Almost surely, 2^130121445 is an apocalyptic number.

130121445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130121445 is a deficient number, since it is larger than the sum of its proper divisors (80096667).

130121445 is a wasteful number, since it uses less digits than its factorization.

130121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84332.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 130121445 is about 11407.0787233191. The cubic root of 130121445 is about 506.7374004336.

Adding to 130121445 its reverse (544121031), we get a palindrome (674242476).

The spelling of 130121445 in words is "one hundred thirty million, one hundred twenty-one thousand, four hundred forty-five".