242873515 has 4 divisors (see below), whose sum is σ = 291448224. Its totient is φ = 194298808.

The previous prime is 242873497. The next prime is 242873539. The reversal of 242873515 is 515378242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515378242 = 2 ⋅257689121.

It is a cyclic number.

It is not a de Polignac number, because 242873515 - 2¹³ = 242865323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24287347 + ... + 24287356.

It is an arithmetic number, because the mean of its divisors is an integer number (72862056).

Almost surely, 2^242873515 is an apocalyptic number.

242873515 is a deficient number, since it is larger than the sum of its proper divisors (48574709).

242873515 is an equidigital number, since it uses as much as digits as its factorization.

242873515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48574708.

The product of its digits is 67200, while the sum is 37.

The square root of 242873515 is about 15584.3997317831. The cubic root of 242873515 is about 623.9168567655.

The spelling of 242873515 in words is "two hundred forty-two million, eight hundred seventy-three thousand, five hundred fifteen".