242072687 has 4 divisors (see below), whose sum is σ = 242103960. Its totient is φ = 242041416.

The previous prime is 242072653. The next prime is 242072689. The reversal of 242072687 is 786270242.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242072687 - 2²⁶ = 174963823 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 242072687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242072689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5489 + ... + 22677.

It is an arithmetic number, because the mean of its divisors is an integer number (60525990).

Almost surely, 2^242072687 is an apocalyptic number.

242072687 is a deficient number, since it is larger than the sum of its proper divisors (31273).

242072687 is a wasteful number, since it uses less digits than its factorization.

242072687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31272.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 242072687 is about 15558.6852593656. The cubic root of 242072687 is about 623.2303536654.

The spelling of 242072687 in words is "two hundred forty-two million, seventy-two thousand, six hundred eighty-seven".