242873517 has 4 divisors (see below), whose sum is σ = 323831360. Its totient is φ = 161915676.

The previous prime is 242873497. The next prime is 242873539. The reversal of 242873517 is 715378242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 242873517 - 2⁶ = 242873453 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 (242873717) 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, 40478917 + ... + 40478922.

It is an arithmetic number, because the mean of its divisors is an integer number (80957840).

Almost surely, 2^242873517 is an apocalyptic number.

It is an amenable number.

242873517 is a deficient number, since it is larger than the sum of its proper divisors (80957843).

242873517 is an equidigital number, since it uses as much as digits as its factorization.

242873517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80957842.

The product of its digits is 94080, while the sum is 39.

The square root of 242873517 is about 15584.3997959498. The cubic root of 242873517 is about 623.9168584781.

The spelling of 242873517 in words is "two hundred forty-two million, eight hundred seventy-three thousand, five hundred seventeen".