142673317 has 12 divisors (see below), whose sum is σ = 148409604. Its totient is φ = 137076480.

The previous prime is 142673309. The next prime is 142673329. The reversal of 142673317 is 713376241.

It can be written as a sum of positive squares in 6 ways, for example, as 17255716 + 125417601 = 4154^2 + 11199^2 .

It is not a de Polignac number, because 142673317 - 2³ = 142673309 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 (142673357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218163 + ... + 218815.

It is an arithmetic number, because the mean of its divisors is an integer number (12367467).

Almost surely, 2^142673317 is an apocalyptic number.

It is an amenable number.

142673317 is a deficient number, since it is larger than the sum of its proper divisors (5736287).

142673317 is an frugal number, since it uses more digits than its factorization.

142673317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 767 counting only the distinct ones).

The product of its digits is 21168, while the sum is 34.

The square root of 142673317 is about 11944.5936305929. The cubic root of 142673317 is about 522.5336373268.

The spelling of 142673317 in words is "one hundred forty-two million, six hundred seventy-three thousand, three hundred seventeen".