142223434 has 8 divisors (see below), whose sum is σ = 214106148. Its totient is φ = 70854720.

The previous prime is 142223413. The next prime is 142223447. The reversal of 142223434 is 434322241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115670025 + 26553409 = 10755^2 + 5153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142223399 and 142223408.

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 in 3 ways as a sum of consecutive naturals, for example, 127807 + ... + 128914.

Almost surely, 2^142223434 is an apocalyptic number.

142223434 is a deficient number, since it is larger than the sum of its proper divisors (71882714).

142223434 is a wasteful number, since it uses less digits than its factorization.

142223434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257000.

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

The square root of 142223434 is about 11925.7466852185. The cubic root of 142223434 is about 521.9838346359.

Adding to 142223434 its reverse (434322241), we get a palindrome (576545675).

The spelling of 142223434 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred thirty-four".