142997 has 4 divisors (see below), whose sum is σ = 144096. Its totient is φ = 141900.

The previous prime is 142993. The next prime is 143053. The reversal of 142997 is 799241.

142997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 799241 = 43 ⋅18587.

It is a cyclic number.

It is not a de Polignac number, because 142997 - 2² = 142993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142993) 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, 323 + ... + 624.

It is an arithmetic number, because the mean of its divisors is an integer number (36024).

2¹⁴²⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

142997 is a deficient number, since it is larger than the sum of its proper divisors (1099).

142997 is an equidigital number, since it uses as much as digits as its factorization.

142997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its digits is 4536, while the sum is 32.

The square root of 142997 is about 378.1494413588. The cubic root of 142997 is about 52.2928496282.

The spelling of 142997 in words is "one hundred forty-two thousand, nine hundred ninety-seven".