130243421 has 12 divisors (see below), whose sum is σ = 165281760. Its totient is φ = 101487960.

The previous prime is 130243391. The next prime is 130243427. The reversal of 130243421 is 124342031.

It is a de Polignac number, because none of the positive numbers 2^k-130243421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130243393 and 130243402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130243427) 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 11 ways as a sum of consecutive naturals, for example, 120281 + ... + 121358.

It is an arithmetic number, because the mean of its divisors is an integer number (13773480).

Almost surely, 2^130243421 is an apocalyptic number.

130243421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130243421 is a deficient number, since it is larger than the sum of its proper divisors (35038339).

130243421 is a wasteful number, since it uses less digits than its factorization.

130243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241664 (or 241657 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 130243421 is about 11412.4239756504. The cubic root of 130243421 is about 506.8956897345.

Adding to 130243421 its reverse (124342031), we get a palindrome (254585452).

The spelling of 130243421 in words is "one hundred thirty million, two hundred forty-three thousand, four hundred twenty-one".