13642427 has 4 divisors (see below), whose sum is σ = 14235600. Its totient is φ = 13049256.

The previous prime is 13642423. The next prime is 13642429. The reversal of 13642427 is 72424631.

13642427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72424631 = 23 ⋅3148897.

It is a cyclic number.

It is not a de Polignac number, because 13642427 - 2² = 13642423 is a prime.

It is a super-2 number, since 2×13642427² = 372231628900658, which contains 22 as substring.

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 13642427.

It is not an unprimeable number, because it can be changed into a prime (13642423) 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, 296552 + ... + 296597.

It is an arithmetic number, because the mean of its divisors is an integer number (3558900).

Almost surely, 2^13642427 is an apocalyptic number.

13642427 is a deficient number, since it is larger than the sum of its proper divisors (593173).

13642427 is an equidigital number, since it uses as much as digits as its factorization.

13642427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593172.

The product of its digits is 8064, while the sum is 29.

The square root of 13642427 is about 3693.5656214558. The cubic root of 13642427 is about 238.9445959703.

The spelling of 13642427 in words is "thirteen million, six hundred forty-two thousand, four hundred twenty-seven".