223142434 has 4 divisors (see below), whose sum is σ = 334713654. Its totient is φ = 111571216.

The previous prime is 223142419. The next prime is 223142467. The reversal of 223142434 is 434241322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434241322 = 2 ⋅217120661.

It can be written as a sum of positive squares in only one way, i.e., 223054225 + 88209 = 14935^2 + 297^2 .

It is a super-3 number, since 3×223142434³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223142399 and 223142408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55785607 + ... + 55785610.

Almost surely, 2^223142434 is an apocalyptic number.

223142434 is a deficient number, since it is larger than the sum of its proper divisors (111571220).

223142434 is a wasteful number, since it uses less digits than its factorization.

223142434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111571219.

The product of its digits is 4608, while the sum is 25.

The square root of 223142434 is about 14937.9528048525. The cubic root of 223142434 is about 606.5417807713.

Adding to 223142434 its reverse (434241322), we get a palindrome (657383756).

The spelling of 223142434 in words is "two hundred twenty-three million, one hundred forty-two thousand, four hundred thirty-four".