242132515 has 4 divisors (see below), whose sum is σ = 290559024. Its totient is φ = 193706008.

The previous prime is 242132509. The next prime is 242132521. The reversal of 242132515 is 515231242.

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

It is an interprime number because it is at equal distance from previous prime (242132509) and next prime (242132521).

It is a cyclic number.

It is not a de Polignac number, because 242132515 - 2¹¹ = 242130467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242132515.

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, 24213247 + ... + 24213256.

It is an arithmetic number, because the mean of its divisors is an integer number (72639756).

Almost surely, 2^242132515 is an apocalyptic number.

242132515 is a deficient number, since it is larger than the sum of its proper divisors (48426509).

242132515 is an equidigital number, since it uses as much as digits as its factorization.

242132515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48426508.

The product of its digits is 2400, while the sum is 25.

The square root of 242132515 is about 15560.6077966126. The cubic root of 242132515 is about 623.2816930030.

Adding to 242132515 its reverse (515231242), we get a palindrome (757363757).

The spelling of 242132515 in words is "two hundred forty-two million, one hundred thirty-two thousand, five hundred fifteen".