142730459 has 4 divisors (see below), whose sum is σ = 146049816. Its totient is φ = 139411104.

The previous prime is 142730449. The next prime is 142730477. The reversal of 142730459 is 954037241.

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-142730459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142730449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659614 + ... + 1659699.

It is an arithmetic number, because the mean of its divisors is an integer number (36512454).

Almost surely, 2^142730459 is an apocalyptic number.

142730459 is a deficient number, since it is larger than the sum of its proper divisors (3319357).

142730459 is an equidigital number, since it uses as much as digits as its factorization.

142730459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319356.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 142730459 is about 11946.9853519622. The cubic root of 142730459 is about 522.6033878880.

The spelling of 142730459 in words is "one hundred forty-two million, seven hundred thirty thousand, four hundred fifty-nine".