142895393 has 4 divisors (see below), whose sum is σ = 144160068. Its totient is φ = 141630720.

The previous prime is 142895359. The next prime is 142895419. The reversal of 142895393 is 393598241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393598241 = 23 ⋅17112967.

It can be written as a sum of positive squares in 2 ways, for example, as 48553024 + 94342369 = 6968^2 + 9713^2 .

It is a cyclic number.

It is not a de Polignac number, because 142895393 - 2¹² = 142891297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142895303) 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, 632168 + ... + 632393.

It is an arithmetic number, because the mean of its divisors is an integer number (36040017).

Almost surely, 2^142895393 is an apocalyptic number.

It is an amenable number.

142895393 is a deficient number, since it is larger than the sum of its proper divisors (1264675).

142895393 is a wasteful number, since it uses less digits than its factorization.

142895393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264674.

The product of its digits is 233280, while the sum is 44.

The square root of 142895393 is about 11953.8861045268. The cubic root of 142895393 is about 522.8046107333.

The spelling of 142895393 in words is "one hundred forty-two million, eight hundred ninety-five thousand, three hundred ninety-three".