142436609 has 8 divisors (see below), whose sum is σ = 163727040. Its totient is φ = 121381776.

The previous prime is 142436587. The next prime is 142436611. The reversal of 142436609 is 906634241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142436609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142436669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57599 + ... + 60020.

It is an arithmetic number, because the mean of its divisors is an integer number (20465880).

Almost surely, 2^142436609 is an apocalyptic number.

It is an amenable number.

142436609 is a deficient number, since it is larger than the sum of its proper divisors (21290431).

142436609 is a wasteful number, since it uses less digits than its factorization.

142436609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117799.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 142436609 is about 11934.6809341515. The cubic root of 142436609 is about 522.2445004345.

The spelling of 142436609 in words is "one hundred forty-two million, four hundred thirty-six thousand, six hundred nine".