142689243 has 8 divisors (see below), whose sum is σ = 190342656. Its totient is φ = 95081000.

The previous prime is 142689229. The next prime is 142689257. The reversal of 142689243 is 342986241.

It is an interprime number because it is at equal distance from previous prime (142689229) and next prime (142689257).

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 142689243 - 2¹⁰ = 142688219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142689203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063 + ... + 17168.

It is an arithmetic number, because the mean of its divisors is an integer number (23792832).

Almost surely, 2^142689243 is an apocalyptic number.

142689243 is a deficient number, since it is larger than the sum of its proper divisors (47653413).

142689243 is a wasteful number, since it uses less digits than its factorization.

142689243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22585.

The product of its digits is 82944, while the sum is 39.

The square root of 142689243 is about 11945.2602734306. The cubic root of 142689243 is about 522.5530793203.

The spelling of 142689243 in words is "one hundred forty-two million, six hundred eighty-nine thousand, two hundred forty-three".