142730109 has 24 divisors (see below), whose sum is σ = 218031840. Its totient is φ = 89723808.

The previous prime is 142730099. The next prime is 142730123. The reversal of 142730109 is 901037241.

142730109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142730109 - 2⁷ = 142729981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142730129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36979 + ... + 40655.

It is an arithmetic number, because the mean of its divisors is an integer number (9084660).

Almost surely, 2^142730109 is an apocalyptic number.

142730109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142730109 is a deficient number, since it is larger than the sum of its proper divisors (75301731).

142730109 is a wasteful number, since it uses less digits than its factorization.

142730109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929 (or 3926 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 142730109 is about 11946.9707039065. The cubic root of 142730109 is about 522.6029607161.

The spelling of 142730109 in words is "one hundred forty-two million, seven hundred thirty thousand, one hundred nine".