242743915 has 8 divisors (see below), whose sum is σ = 291419568. Its totient is φ = 194110560.

The previous prime is 242743913. The next prime is 242743931. The reversal of 242743915 is 519347242.

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

It is not a de Polignac number, because 242743915 - 2¹ = 242743913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242743913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3844 + ... + 22366.

It is an arithmetic number, because the mean of its divisors is an integer number (36427446).

Almost surely, 2^242743915 is an apocalyptic number.

242743915 is a deficient number, since it is larger than the sum of its proper divisors (48675653).

242743915 is a wasteful number, since it uses less digits than its factorization.

242743915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21149.

The product of its digits is 60480, while the sum is 37.

The square root of 242743915 is about 15580.2411727162. The cubic root of 242743915 is about 623.8058607032.

The spelling of 242743915 in words is "two hundred forty-two million, seven hundred forty-three thousand, nine hundred fifteen".