223442139 has 4 divisors (see below), whose sum is σ = 297922856. Its totient is φ = 148961424.

The previous prime is 223442111. The next prime is 223442143. The reversal of 223442139 is 931244322.

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

It is not a de Polignac number, because 223442139 - 2¹⁵ = 223409371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223442179) 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, 37240354 + ... + 37240359.

It is an arithmetic number, because the mean of its divisors is an integer number (74480714).

Almost surely, 2^223442139 is an apocalyptic number.

223442139 is a deficient number, since it is larger than the sum of its proper divisors (74480717).

223442139 is an equidigital number, since it uses as much as digits as its factorization.

223442139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74480716.

The product of its digits is 10368, while the sum is 30.

The square root of 223442139 is about 14947.9811011387. The cubic root of 223442139 is about 606.8132102146.

The spelling of 223442139 in words is "two hundred twenty-three million, four hundred forty-two thousand, one hundred thirty-nine".