242442545 has 4 divisors (see below), whose sum is σ = 290931060. Its totient is φ = 193954032.

The previous prime is 242442539. The next prime is 242442569. The reversal of 242442545 is 545244242.

242442545 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.

It can be written as a sum of positive squares in 2 ways, for example, as 145636624 + 96805921 = 12068^2 + 9839^2 .

It is a cyclic number.

It is not a de Polignac number, because 242442545 - 2⁶ = 242442481 is a prime.

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, 24244250 + ... + 24244259.

It is an arithmetic number, because the mean of its divisors is an integer number (72732765).

Almost surely, 2^242442545 is an apocalyptic number.

It is an amenable number.

242442545 is a deficient number, since it is larger than the sum of its proper divisors (48488515).

242442545 is an equidigital number, since it uses as much as digits as its factorization.

242442545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48488514.

The product of its digits is 51200, while the sum is 32.

The square root of 242442545 is about 15570.5666242433. The cubic root of 242442545 is about 623.5475991988.

Adding to 242442545 its reverse (545244242), we get a palindrome (787686787).

The spelling of 242442545 in words is "two hundred forty-two million, four hundred forty-two thousand, five hundred forty-five".