13421530 has 8 divisors (see below), whose sum is σ = 24158772. Its totient is φ = 5368608.

The previous prime is 13421521. The next prime is 13421533. The reversal of 13421530 is 3512431.

It can be written as a sum of positive squares in 2 ways, for example, as 11964681 + 1456849 = 3459^2 + 1207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13421498 and 13421507.

It is not an unprimeable number, because it can be changed into a prime (13421533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671067 + ... + 671086.

Almost surely, 2^13421530 is an apocalyptic number.

13421530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13421530 is a deficient number, since it is larger than the sum of its proper divisors (10737242).

13421530 is a wasteful number, since it uses less digits than its factorization.

13421530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342160.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13421530 is about 3663.5406371433. The cubic root of 13421530 is about 237.6479152460.

Adding to 13421530 its reverse (3512431), we get a palindrome (16933961).

Subtracting from 13421530 its reverse (3512431), we obtain a palindrome (9909099).

The spelling of 13421530 in words is "thirteen million, four hundred twenty-one thousand, five hundred thirty".