142305321 has 8 divisors (see below), whose sum is σ = 189918400. Its totient is φ = 94781232.

The previous prime is 142305313. The next prime is 142305337. The reversal of 142305321 is 123503241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142305321 - 2³ = 142305313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142305341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18421 + ... + 24978.

It is an arithmetic number, because the mean of its divisors is an integer number (23739800).

Almost surely, 2^142305321 is an apocalyptic number.

It is an amenable number.

142305321 is a deficient number, since it is larger than the sum of its proper divisors (47613079).

142305321 is a wasteful number, since it uses less digits than its factorization.

142305321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44495.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 142305321 is about 11929.1793934034. The cubic root of 142305321 is about 522.0839950860.

Adding to 142305321 its reverse (123503241), we get a palindrome (265808562).

The spelling of 142305321 in words is "one hundred forty-two million, three hundred five thousand, three hundred twenty-one".