13422187 has 4 divisors (see below), whose sum is σ = 13547736. Its totient is φ = 13296640.

The previous prime is 13422169. The next prime is 13422209. The reversal of 13422187 is 78122431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13422187 - 2¹¹ = 13420139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13422107) 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, 62614 + ... + 62827.

It is an arithmetic number, because the mean of its divisors is an integer number (3386934).

Almost surely, 2^13422187 is an apocalyptic number.

13422187 is a deficient number, since it is larger than the sum of its proper divisors (125549).

13422187 is a wasteful number, since it uses less digits than its factorization.

13422187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125548.

The product of its digits is 2688, while the sum is 28.

The square root of 13422187 is about 3663.6303034013. The cubic root of 13422187 is about 237.6517928996.

The spelling of 13422187 in words is "thirteen million, four hundred twenty-two thousand, one hundred eighty-seven".