13742217 has 10 divisors (see below), whose sum is σ = 20528618. Its totient is φ = 9161424.

The previous prime is 13742191. The next prime is 13742231. The reversal of 13742217 is 71224731.

It is a happy number.

13742217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 1798281 = 3456^2 + 1341^2 .

It is not a de Polignac number, because 13742217 - 2⁷ = 13742089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13742297) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84748 + ... + 84909.

Almost surely, 2^13742217 is an apocalyptic number.

It is an amenable number.

13742217 is a deficient number, since it is larger than the sum of its proper divisors (6786401).

13742217 is an equidigital number, since it uses as much as digits as its factorization.

13742217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169669 (or 169660 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 13742217 is about 3707.0496354918. The cubic root of 13742217 is about 239.5257823573.

Adding to 13742217 its reverse (71224731), we get a palindrome (84966948).

The spelling of 13742217 in words is "thirteen million, seven hundred forty-two thousand, two hundred seventeen".