123142434 has 16 divisors (see below), whose sum is σ = 252292320. Its totient is φ = 40046240.

The previous prime is 123142433. The next prime is 123142501. The reversal of 123142434 is 434241321.

It is not an unprimeable number, because it can be changed into a prime (123142433) 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 in 7 ways as a sum of consecutive naturals, for example, 250044 + ... + 250535.

It is an arithmetic number, because the mean of its divisors is an integer number (15768270).

Almost surely, 2^123142434 is an apocalyptic number.

123142434 is an abundant number, since it is smaller than the sum of its proper divisors (129149886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123142434 is a wasteful number, since it uses less digits than its factorization.

123142434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500625.

The product of its digits is 2304, while the sum is 24.

The square root of 123142434 is about 11096.9560691209. The cubic root of 123142434 is about 497.5108744035.

Adding to 123142434 its reverse (434241321), we get a palindrome (557383755).

The spelling of 123142434 in words is "one hundred twenty-three million, one hundred forty-two thousand, four hundred thirty-four".