142330385 has 16 divisors (see below), whose sum is σ = 174155520. Its totient is φ = 111637440.

The previous prime is 142330381. The next prime is 142330399. The reversal of 142330385 is 583033241.

It is not a de Polignac number, because 142330385 - 2² = 142330381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142330381) 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 15 ways as a sum of consecutive naturals, for example, 133364 + ... + 134426.

It is an arithmetic number, because the mean of its divisors is an integer number (10884720).

Almost surely, 2^142330385 is an apocalyptic number.

It is an amenable number.

142330385 is a deficient number, since it is larger than the sum of its proper divisors (31825135).

142330385 is a wasteful number, since it uses less digits than its factorization.

142330385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 142330385 is about 11930.2298804340. The cubic root of 142330385 is about 522.1146445491.

The spelling of 142330385 in words is "one hundred forty-two million, three hundred thirty thousand, three hundred eighty-five".