13421547 has 24 divisors (see below), whose sum is σ = 20134400. Its totient is φ = 8609328.

The previous prime is 13421539. The next prime is 13421563. The reversal of 13421547 is 74512431.

It is not a de Polignac number, because 13421547 - 2³ = 13421539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13421547.

It is not an unprimeable number, because it can be changed into a prime (13421537) 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, 30354 + ... + 30792.

Almost surely, 2^13421547 is an apocalyptic number.

13421547 is a deficient number, since it is larger than the sum of its proper divisors (6712853).

13421547 is a wasteful number, since it uses less digits than its factorization.

13421547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 564 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 13421547 is about 3663.5429573024. The cubic root of 13421547 is about 237.6480155826.

Adding to 13421547 its reverse (74512431), we get a palindrome (87933978).

The spelling of 13421547 in words is "thirteen million, four hundred twenty-one thousand, five hundred forty-seven".