242188807 has 4 divisors (see below), whose sum is σ = 276787216. Its totient is φ = 207590400.

The previous prime is 242188759. The next prime is 242188811. The reversal of 242188807 is 708881242.

242188807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708881242 = 2 ⋅354440621.

It is a cyclic number.

It is not a de Polignac number, because 242188807 - 2¹¹ = 242186759 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 242188807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242188867) 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, 17299194 + ... + 17299207.

It is an arithmetic number, because the mean of its divisors is an integer number (69196804).

Almost surely, 2^242188807 is an apocalyptic number.

242188807 is a deficient number, since it is larger than the sum of its proper divisors (34598409).

242188807 is an equidigital number, since it uses as much as digits as its factorization.

242188807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34598408.

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 242188807 is about 15562.4164897358. The cubic root of 242188807 is about 623.3299903227.

The spelling of 242188807 in words is "two hundred forty-two million, one hundred eighty-eight thousand, eight hundred seven".