13117842 has 16 divisors (see below), whose sum is σ = 29150880. Its totient is φ = 4372596.

The previous prime is 13117837. The next prime is 13117849. The reversal of 13117842 is 24871131.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (13117849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121408 + ... + 121515.

It is an arithmetic number, because the mean of its divisors is an integer number (1821930).

Almost surely, 2^13117842 is an apocalyptic number.

13117842 is an abundant number, since it is smaller than the sum of its proper divisors (16033038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13117842 is a wasteful number, since it uses less digits than its factorization.

13117842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242934 (or 242928 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 13117842 is about 3621.8561539630. The cubic root of 13117842 is about 235.8418096262.

Adding to 13117842 its reverse (24871131), we get a palindrome (37988973).

It can be divided in two parts, 13 and 117842, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 13117842 in words is "thirteen million, one hundred seventeen thousand, eight hundred forty-two".