13421567 has 2 divisors, whose sum is σ = 13421568. Its totient is φ = 13421566.

The previous prime is 13421563. The next prime is 13421579. The reversal of 13421567 is 76512431.

It is a weak prime.

It is an emirp because it is prime and its reverse (76512431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13421567 - 2² = 13421563 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13421563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710783 + 6710784.

It is an arithmetic number, because the mean of its divisors is an integer number (6710784).

Almost surely, 2^13421567 is an apocalyptic number.

13421567 is a deficient number, since it is larger than the sum of its proper divisors (1).

13421567 is an equidigital number, since it uses as much as digits as its factorization.

13421567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 13421567 is about 3663.5456868995. The cubic root of 13421567 is about 237.6481336256.

Adding to 13421567 its reverse (76512431), we get a palindrome (89933998).

The spelling of 13421567 in words is "thirteen million, four hundred twenty-one thousand, five hundred sixty-seven".