242744123 has 4 divisors (see below), whose sum is σ = 251114640. Its totient is φ = 234373608.

The previous prime is 242744119. The next prime is 242744141. The reversal of 242744123 is 321447242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242744123 - 2² = 242744119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 8370487 = 242744123 / (2 + 4 + 2 + 7 + 4 + 4 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242744153) 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, 4185215 + ... + 4185272.

It is an arithmetic number, because the mean of its divisors is an integer number (62778660).

Almost surely, 2^242744123 is an apocalyptic number.

242744123 is a deficient number, since it is larger than the sum of its proper divisors (8370517).

242744123 is an equidigital number, since it uses as much as digits as its factorization.

242744123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8370516.

The product of its digits is 10752, while the sum is 29.

The square root of 242744123 is about 15580.2478478361. The cubic root of 242744123 is about 623.8060388767.

The spelling of 242744123 in words is "two hundred forty-two million, seven hundred forty-four thousand, one hundred twenty-three".