242223139 has 4 divisors (see below), whose sum is σ = 242321080. Its totient is φ = 242125200.

The previous prime is 242223073. The next prime is 242223151. The reversal of 242223139 is 931322242.

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 242223139 - 2⁹ = 242222627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242223169) 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, 45162 + ... + 50239.

It is an arithmetic number, because the mean of its divisors is an integer number (60580270).

Almost surely, 2^242223139 is an apocalyptic number.

242223139 is a deficient number, since it is larger than the sum of its proper divisors (97941).

242223139 is an equidigital number, since it uses as much as digits as its factorization.

242223139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97940.

The product of its digits is 5184, while the sum is 28.

The square root of 242223139 is about 15563.5194927112. The cubic root of 242223139 is about 623.3594427630.

The spelling of 242223139 in words is "two hundred forty-two million, two hundred twenty-three thousand, one hundred thirty-nine".