142340009 has 8 divisors (see below), whose sum is σ = 163518720. Its totient is φ = 121372416.

The previous prime is 142339979. The next prime is 142340021. The reversal of 142340009 is 900043241.

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

It is a cyclic number.

It is not a de Polignac number, because 142340009 - 2¹² = 142335913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142340059) 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, 51329 + ... + 54030.

It is an arithmetic number, because the mean of its divisors is an integer number (20439840).

Almost surely, 2^142340009 is an apocalyptic number.

It is an amenable number.

142340009 is a deficient number, since it is larger than the sum of its proper divisors (21178711).

142340009 is a wasteful number, since it uses less digits than its factorization.

142340009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105559.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 142340009 is about 11930.6332187357. The cubic root of 142340009 is about 522.1264122826.

The spelling of 142340009 in words is "one hundred forty-two million, three hundred forty thousand, nine".