242047887 has 16 divisors (see below), whose sum is σ = 350052192. Its totient is φ = 148167680.

The previous prime is 242047867. The next prime is 242047909. The reversal of 242047887 is 788740242.

It is a cyclic number.

It is not a de Polignac number, because 242047887 - 2⁷ = 242047759 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242047807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55788 + ... + 59969.

It is an arithmetic number, because the mean of its divisors is an integer number (21878262).

Almost surely, 2^242047887 is an apocalyptic number.

242047887 is a deficient number, since it is larger than the sum of its proper divisors (108004305).

242047887 is a wasteful number, since it uses less digits than its factorization.

242047887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115818.

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 242047887 is about 15557.8882564441. Note that the first 3 decimals coincide. The cubic root of 242047887 is about 623.2090699196.

The spelling of 242047887 in words is "two hundred forty-two million, forty-seven thousand, eight hundred eighty-seven".