142609389 has 8 divisors (see below), whose sum is σ = 204772512. Its totient is φ = 87759600.

The previous prime is 142609349. The next prime is 142609403. The reversal of 142609389 is 983906241.

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

It is not a de Polignac number, because 142609389 - 2⁷ = 142609261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142609389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142609319) 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, 1828287 + ... + 1828364.

It is an arithmetic number, because the mean of its divisors is an integer number (25596564).

Almost surely, 2^142609389 is an apocalyptic number.

It is an amenable number.

142609389 is a deficient number, since it is larger than the sum of its proper divisors (62163123).

142609389 is a wasteful number, since it uses less digits than its factorization.

142609389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656667.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 142609389 is about 11941.9173083722. The cubic root of 142609389 is about 522.4555813373.

The spelling of 142609389 in words is "one hundred forty-two million, six hundred nine thousand, three hundred eighty-nine".