130404424 has 8 divisors (see below), whose sum is σ = 244508310. Its totient is φ = 65202208.

The previous prime is 130404403. The next prime is 130404427. The reversal of 130404424 is 424404031.

It can be written as a sum of positive squares in only one way, i.e., 107536900 + 22867524 = 10370^2 + 4782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 130404395 and 130404404.

It is not an unprimeable number, because it can be changed into a prime (130404427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8150269 + ... + 8150284.

Almost surely, 2^130404424 is an apocalyptic number.

It is an amenable number.

130404424 is a deficient number, since it is larger than the sum of its proper divisors (114103886).

130404424 is a wasteful number, since it uses less digits than its factorization.

130404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16300559 (or 16300555 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 130404424 is about 11419.4756447045. The cubic root of 130404424 is about 507.1044734630.

Adding to 130404424 its reverse (424404031), we get a palindrome (554808455).

The spelling of 130404424 in words is "one hundred thirty million, four hundred four thousand, four hundred twenty-four".