142005117 has 8 divisors (see below), whose sum is σ = 189661824. Its totient is φ = 94509248.

The previous prime is 142005103. The next prime is 142005137. The reversal of 142005117 is 711500241.

It is a happy number.

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 142005117 - 2¹² = 142001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142005093 and 142005102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142005137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38133 + ... + 41690.

It is an arithmetic number, because the mean of its divisors is an integer number (23707728).

Almost surely, 2^142005117 is an apocalyptic number.

It is an amenable number.

142005117 is a deficient number, since it is larger than the sum of its proper divisors (47656707).

142005117 is an equidigital number, since it uses as much as digits as its factorization.

142005117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80419.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 142005117 is about 11916.5899904293. The cubic root of 142005117 is about 521.7166111998.

Adding to 142005117 its reverse (711500241), we get a palindrome (853505358).

The spelling of 142005117 in words is "one hundred forty-two million, five thousand, one hundred seventeen".