242509415 has 4 divisors (see below), whose sum is σ = 291011304. Its totient is φ = 194007528.

The previous prime is 242509387. The next prime is 242509417. The reversal of 242509415 is 514905242.

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

It is a cyclic number.

It is not a de Polignac number, because 242509415 - 2¹⁶ = 242443879 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 (242509417) 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, 24250937 + ... + 24250946.

It is an arithmetic number, because the mean of its divisors is an integer number (72752826).

Almost surely, 2^242509415 is an apocalyptic number.

242509415 is a deficient number, since it is larger than the sum of its proper divisors (48501889).

242509415 is an equidigital number, since it uses as much as digits as its factorization.

242509415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48501888.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 242509415 is about 15572.7137968949. The cubic root of 242509415 is about 623.6049224641.

The spelling of 242509415 in words is "two hundred forty-two million, five hundred nine thousand, four hundred fifteen".