142870369 has 4 divisors (see below), whose sum is σ = 142940160. Its totient is φ = 142800580.

The previous prime is 142870361. The next prime is 142870379. The reversal of 142870369 is 963078241.

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: 963078241 = 23 ⋅41872967.

It is a cyclic number.

It is not a de Polignac number, because 142870369 - 2³ = 142870361 is a prime.

It is a super-2 number, since 2×142870369² = 40823884676392322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142870361) 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, 31729 + ... + 35950.

It is an arithmetic number, because the mean of its divisors is an integer number (35735040).

Almost surely, 2^142870369 is an apocalyptic number.

It is an amenable number.

142870369 is a deficient number, since it is larger than the sum of its proper divisors (69791).

142870369 is an equidigital number, since it uses as much as digits as its factorization.

142870369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69790.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 142870369 is about 11952.8393697899. The cubic root of 142870369 is about 522.7740909102.

The spelling of 142870369 in words is "one hundred forty-two million, eight hundred seventy thousand, three hundred sixty-nine".