142473009 has 8 divisors (see below), whose sum is σ = 217101760. Its totient is φ = 81413136.

The previous prime is 142473007. The next prime is 142473031. The reversal of 142473009 is 900374241.

It is a happy number.

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

It is not a de Polignac number, because 142473009 - 2¹ = 142473007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142473007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3392194 + ... + 3392235.

It is an arithmetic number, because the mean of its divisors is an integer number (27137720).

Almost surely, 2^142473009 is an apocalyptic number.

It is an amenable number.

142473009 is a deficient number, since it is larger than the sum of its proper divisors (74628751).

142473009 is an equidigital number, since it uses as much as digits as its factorization.

142473009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784439.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 142473009 is about 11936.2058041909. The cubic root of 142473009 is about 522.2889835695.

The spelling of 142473009 in words is "one hundred forty-two million, four hundred seventy-three thousand, nine".