242133445 has 4 divisors (see below), whose sum is σ = 290560140. Its totient is φ = 193706752.

The previous prime is 242133421. The next prime is 242133487. The reversal of 242133445 is 544331242.

It is a happy number.

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 149377284 + 92756161 = 12222^2 + 9631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242133445 is a prime.

It is a congruent number.

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, 24213340 + ... + 24213349.

It is an arithmetic number, because the mean of its divisors is an integer number (72640035).

Almost surely, 2^242133445 is an apocalyptic number.

It is an amenable number.

242133445 is a deficient number, since it is larger than the sum of its proper divisors (48426695).

242133445 is an equidigital number, since it uses as much as digits as its factorization.

242133445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48426694.

The product of its digits is 11520, while the sum is 28.

The square root of 242133445 is about 15560.6376797354. The cubic root of 242133445 is about 623.2824909838.

Adding to 242133445 its reverse (544331242), we get a palindrome (786464687).

The spelling of 242133445 in words is "two hundred forty-two million, one hundred thirty-three thousand, four hundred forty-five".