142115434 has 4 divisors (see below), whose sum is σ = 213173154. Its totient is φ = 71057716.

The previous prime is 142115431. The next prime is 142115489. The reversal of 142115434 is 434511241.

142115434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434511241 = 229 ⋅1897429.

It can be written as a sum of positive squares in only one way, i.e., 138886225 + 3229209 = 11785^2 + 1797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142115399 and 142115408.

It is not an unprimeable number, because it can be changed into a prime (142115431) by changing a digit.

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, 35528857 + ... + 35528860.

Almost surely, 2^142115434 is an apocalyptic number.

142115434 is a deficient number, since it is larger than the sum of its proper divisors (71057720).

142115434 is an equidigital number, since it uses as much as digits as its factorization.

142115434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71057719.

The product of its digits is 1920, while the sum is 25.

The square root of 142115434 is about 11921.2178069189. The cubic root of 142115434 is about 521.8516751453.

Adding to 142115434 its reverse (434511241), we get a palindrome (576626675).

The spelling of 142115434 in words is "one hundred forty-two million, one hundred fifteen thousand, four hundred thirty-four".