242962987 has 4 divisors (see below), whose sum is σ = 243085816. Its totient is φ = 242840160.

The previous prime is 242962933. The next prime is 242962991. The reversal of 242962987 is 789269242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242962987 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 242962987.

It is not an unprimeable number, because it can be changed into a prime (242962927) 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, 58398 + ... + 62419.

It is an arithmetic number, because the mean of its divisors is an integer number (60771454).

Almost surely, 2^242962987 is an apocalyptic number.

242962987 is a deficient number, since it is larger than the sum of its proper divisors (122829).

242962987 is a wasteful number, since it uses less digits than its factorization.

242962987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122828.

The product of its digits is 870912, while the sum is 49.

The square root of 242962987 is about 15587.2700303806. The cubic root of 242962987 is about 623.9934621206.

The spelling of 242962987 in words is "two hundred forty-two million, nine hundred sixty-two thousand, nine hundred eighty-seven".