130421421 has 40 divisors (see below), whose sum is σ = 211167264. Its totient is φ = 79742880.

The previous prime is 130421419. The next prime is 130421429. The reversal of 130421421 is 124124031.

It is not a de Polignac number, because 130421421 - 2¹ = 130421419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130421394 and 130421403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130421429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221890 + ... + 222476.

Almost surely, 2^130421421 is an apocalyptic number.

It is an amenable number.

130421421 is a deficient number, since it is larger than the sum of its proper divisors (80745843).

130421421 is a wasteful number, since it uses less digits than its factorization.

130421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 130421421 is about 11420.2198315094. The cubic root of 130421421 is about 507.1265046182.

Adding to 130421421 its reverse (124124031), we get a palindrome (254545452).

The spelling of 130421421 in words is "one hundred thirty million, four hundred twenty-one thousand, four hundred twenty-one".