130403421 has 24 divisors (see below), whose sum is σ = 192695256. Its totient is φ = 84954240.

The previous prime is 130403417. The next prime is 130403431. The reversal of 130403421 is 124304031.

It can be written as a sum of positive squares in 4 ways, for example, as 50211396 + 80192025 = 7086^2 + 8955^2 .

It is not a de Polignac number, because 130403421 - 2² = 130403417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130403394 and 130403403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130403431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94291 + ... + 95663.

It is an arithmetic number, because the mean of its divisors is an integer number (8028969).

Almost surely, 2^130403421 is an apocalyptic number.

It is an amenable number.

130403421 is a deficient number, since it is larger than the sum of its proper divisors (62291835).

130403421 is a wasteful number, since it uses less digits than its factorization.

130403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130403421 is about 11419.4317284180. The cubic root of 130403421 is about 507.1031733356.

Adding to 130403421 its reverse (124304031), we get a palindrome (254707452).

It can be divided in two parts, 13040 and 3421, that added together give a palindrome (16461).

The spelling of 130403421 in words is "one hundred thirty million, four hundred three thousand, four hundred twenty-one".