142882321 has 4 divisors (see below), whose sum is σ = 144269632. Its totient is φ = 141495012.

The previous prime is 142882307. The next prime is 142882349. The reversal of 142882321 is 123288241.

It is a happy number.

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: 123288241 = 67 ⋅1840123.

It is a cyclic number.

It is not a de Polignac number, because 142882321 - 2²³ = 134493713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142882921) 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, 693501 + ... + 693706.

It is an arithmetic number, because the mean of its divisors is an integer number (36067408).

Almost surely, 2^142882321 is an apocalyptic number.

It is an amenable number.

142882321 is a deficient number, since it is larger than the sum of its proper divisors (1387311).

142882321 is a wasteful number, since it uses less digits than its factorization.

142882321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387310.

The product of its digits is 6144, while the sum is 31.

The square root of 142882321 is about 11953.3393242223. The cubic root of 142882321 is about 522.7886682779.

The spelling of 142882321 in words is "one hundred forty-two million, eight hundred eighty-two thousand, three hundred twenty-one".