142917 has 4 divisors (see below), whose sum is σ = 190560. Its totient is φ = 95276.

The previous prime is 142907. The next prime is 142939. The reversal of 142917 is 719241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142917 - 2⁷ = 142789 is a prime.

It is a D-number.

It is a plaindrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142917.

It is not an unprimeable number, because it can be changed into a prime (142907) 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, 23817 + ... + 23822.

It is an arithmetic number, because the mean of its divisors is an integer number (47640).

2¹⁴²⁹¹⁷ is an apocalyptic number.

It is an amenable number.

142917 is a deficient number, since it is larger than the sum of its proper divisors (47643).

142917 is an equidigital number, since it uses as much as digits as its factorization.

142917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47642.

The product of its digits is 504, while the sum is 24.

The square root of 142917 is about 378.0436482736. The cubic root of 142917 is about 52.2830960241.

The spelling of 142917 in words is "one hundred forty-two thousand, nine hundred seventeen".