224420138 has 4 divisors (see below), whose sum is σ = 336630210. Its totient is φ = 112210068.

The previous prime is 224420117. The next prime is 224420143. The reversal of 224420138 is 831024422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831024422 = 2 ⋅415512211.

It can be written as a sum of positive squares in only one way, i.e., 140825689 + 83594449 = 11867^2 + 9143^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56105033 + ... + 56105036.

Almost surely, 2^224420138 is an apocalyptic number.

224420138 is a deficient number, since it is larger than the sum of its proper divisors (112210072).

224420138 is a wasteful number, since it uses less digits than its factorization.

224420138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112210071.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 224420138 is about 14980.6587972626. The cubic root of 224420138 is about 607.6972555713.

The spelling of 224420138 in words is "two hundred twenty-four million, four hundred twenty thousand, one hundred thirty-eight".