142609807 has 4 divisors (see below), whose sum is σ = 144563440. Its totient is φ = 140656176.

The previous prime is 142609793. The next prime is 142609811. The reversal of 142609807 is 708906241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142609807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142609897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976707 + ... + 976852.

It is an arithmetic number, because the mean of its divisors is an integer number (36140860).

Almost surely, 2^142609807 is an apocalyptic number.

142609807 is a deficient number, since it is larger than the sum of its proper divisors (1953633).

142609807 is an equidigital number, since it uses as much as digits as its factorization.

142609807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953632.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 142609807 is about 11941.9348097367. The cubic root of 142609807 is about 522.4560917904.

The spelling of 142609807 in words is "one hundred forty-two million, six hundred nine thousand, eight hundred seven".