13742257 has 8 divisors (see below), whose sum is σ = 14126112. Its totient is φ = 13360800.

The previous prime is 13742249. The next prime is 13742297. The reversal of 13742257 is 75224731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13742257 - 2³ = 13742249 is a prime.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23118 + ... + 23704.

It is an arithmetic number, because the mean of its divisors is an integer number (1765764).

Almost surely, 2^13742257 is an apocalyptic number.

It is an amenable number.

13742257 is a deficient number, since it is larger than the sum of its proper divisors (383855).

13742257 is an equidigital number, since it uses as much as digits as its factorization.

13742257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199.

The product of its digits is 11760, while the sum is 31.

The square root of 13742257 is about 3707.0550306139. The cubic root of 13742257 is about 239.5260147560.

Adding to 13742257 its reverse (75224731), we get a palindrome (88966988).

The spelling of 13742257 in words is "thirteen million, seven hundred forty-two thousand, two hundred fifty-seven".