142144234 has 4 divisors (see below), whose sum is σ = 213216354. Its totient is φ = 71072116.

The previous prime is 142144199. The next prime is 142144237. The reversal of 142144234 is 432441241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432441241 = 12409 ⋅34849.

It can be written as a sum of positive squares in only one way, i.e., 94575625 + 47568609 = 9725^2 + 6897^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142144199 and 142144208.

It is not an unprimeable number, because it can be changed into a prime (142144237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35536057 + ... + 35536060.

Almost surely, 2^142144234 is an apocalyptic number.

142144234 is a deficient number, since it is larger than the sum of its proper divisors (71072120).

142144234 is an equidigital number, since it uses as much as digits as its factorization.

142144234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71072119.

The product of its digits is 3072, while the sum is 25.

The square root of 142144234 is about 11922.4256760107. The cubic root of 142144234 is about 521.8869242211.

Adding to 142144234 its reverse (432441241), we get a palindrome (574585475).

The spelling of 142144234 in words is "one hundred forty-two million, one hundred forty-four thousand, two hundred thirty-four".