123534142 has 16 divisors (see below), whose sum is σ = 195773760. Its totient is φ = 58367008.

The previous prime is 123534119. The next prime is 123534167. The reversal of 123534142 is 241435321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19933 + ... + 25384.

It is an arithmetic number, because the mean of its divisors is an integer number (12235860).

Almost surely, 2^123534142 is an apocalyptic number.

123534142 is a deficient number, since it is larger than the sum of its proper divisors (72239618).

123534142 is a wasteful number, since it uses less digits than its factorization.

123534142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45395.

The product of its digits is 2880, while the sum is 25.

The square root of 123534142 is about 11114.5914004969. The cubic root of 123534142 is about 498.0378325371.

Adding to 123534142 its reverse (241435321), we get a palindrome (364969463).

The spelling of 123534142 in words is "one hundred twenty-three million, five hundred thirty-four thousand, one hundred forty-two".