11142347 has 4 divisors (see below), whose sum is σ = 11223816.
Its totient is φ = 11060880.
The previous prime is 11142331. The next prime is 11142353. The reversal of 11142347 is 74324111.
Adding to 11142347 its reverse (74324111), we get a palindrome (85466458).
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74324111 = 1061 ⋅70051.
It is a cyclic number.
It is not a de Polignac number, because 11142347 - 24 = 11142331 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (11142317) 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, 40529 + ... + 40802.
It is an arithmetic number, because the mean of its divisors is an integer number (2805954).
Almost surely, 211142347 is an apocalyptic number.
11142347 is a deficient number, since it is larger than the sum of its proper divisors (81469).
11142347 is an equidigital number, since it uses as much as digits as its factorization.
11142347 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81468.
The product of its digits is 672, while the sum is 23.
The square root of 11142347 is about 3338.0154283646.
The cubic root of 11142347 is about 223.3532243861.
The spelling of 11142347 in words is "eleven million, one hundred forty-two thousand, three hundred forty-seven".