130424021 has 16 divisors (see below), whose sum is σ = 161616000. Its totient is φ = 102489408.

The previous prime is 130423981. The next prime is 130424057. The reversal of 130424021 is 120424031.

It is a de Polignac number, because none of the positive numbers 2^k-130424021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130424081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8750 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (10101000).

Almost surely, 2^130424021 is an apocalyptic number.

It is an amenable number.

130424021 is a deficient number, since it is larger than the sum of its proper divisors (31191979).

130424021 is a wasteful number, since it uses less digits than its factorization.

130424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 130424021 is about 11420.3336641273. Note that the first 3 decimals coincide. The cubic root of 130424021 is about 507.1298745149.

Adding to 130424021 its reverse (120424031), we get a palindrome (250848052).

The spelling of 130424021 in words is "one hundred thirty million, four hundred twenty-four thousand, twenty-one".