142397 has 4 divisors (see below), whose sum is σ = 143616. Its totient is φ = 141180.

The previous prime is 142391. The next prime is 142403. The reversal of 142397 is 793241.

142397 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 an emirpimes, since its reverse is a distinct semiprime: 793241 = 239 ⋅3319.

It is an interprime number because it is at equal distance from previous prime (142391) and next prime (142403).

It is a cyclic number.

It is not a de Polignac number, because 142397 - 2⁴ = 142381 is a prime.

It is a Duffinian number.

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 142397.

It is not an unprimeable number, because it can be changed into a prime (142391) 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, 413 + ... + 674.

It is an arithmetic number, because the mean of its divisors is an integer number (35904).

2¹⁴²³⁹⁷ is an apocalyptic number.

It is an amenable number.

142397 is a deficient number, since it is larger than the sum of its proper divisors (1219).

142397 is a wasteful number, since it uses less digits than its factorization.

142397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

The product of its digits is 1512, while the sum is 26.

The square root of 142397 is about 377.3552702693. The cubic root of 142397 is about 52.2196087085.

The spelling of 142397 in words is "one hundred forty-two thousand, three hundred ninety-seven".