142609789 has 8 divisors (see below), whose sum is σ = 163515968. Its totient is φ = 121836960.

The previous prime is 142609781. The next prime is 142609793. The reversal of 142609789 is 987906241.

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

It is not a de Polignac number, because 142609789 - 2³ = 142609781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142609781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31032 + ... + 35329.

It is an arithmetic number, because the mean of its divisors is an integer number (20439496).

Almost surely, 2^142609789 is an apocalyptic number.

It is an amenable number.

142609789 is a deficient number, since it is larger than the sum of its proper divisors (20906179).

142609789 is an equidigital number, since it uses as much as digits as its factorization.

142609789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66675.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 142609789 is about 11941.9340560899. The cubic root of 142609789 is about 522.4560698092.

The spelling of 142609789 in words is "one hundred forty-two million, six hundred nine thousand, seven hundred eighty-nine".