142773317 has 4 divisors (see below), whose sum is σ = 143815596. Its totient is φ = 141731040.

The previous prime is 142773307. The next prime is 142773329. The reversal of 142773317 is 713377241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73034116 + 69739201 = 8546^2 + 8351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142773317 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 (142773307) 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, 520934 + ... + 521207.

It is an arithmetic number, because the mean of its divisors is an integer number (35953899).

Almost surely, 2^142773317 is an apocalyptic number.

It is an amenable number.

142773317 is a deficient number, since it is larger than the sum of its proper divisors (1042279).

142773317 is a wasteful number, since it uses less digits than its factorization.

142773317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042278.

The product of its digits is 24696, while the sum is 35.

The square root of 142773317 is about 11948.7788915855. The cubic root of 142773317 is about 522.6556904232.

The spelling of 142773317 in words is "one hundred forty-two million, seven hundred seventy-three thousand, three hundred seventeen".