123403142 has 16 divisors (see below), whose sum is σ = 195804000. Its totient is φ = 58208832.

The previous prime is 123403129. The next prime is 123403171. The reversal of 123403142 is 241304321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15017 + ... + 21732.

It is an arithmetic number, because the mean of its divisors is an integer number (12237750).

Almost surely, 2^123403142 is an apocalyptic number.

123403142 is a deficient number, since it is larger than the sum of its proper divisors (72400858).

123403142 is a wasteful number, since it uses less digits than its factorization.

123403142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36847.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123403142 is about 11108.6966832298. The cubic root of 123403142 is about 497.8617245921.

Adding to 123403142 its reverse (241304321), we get a palindrome (364707463).

The spelling of 123403142 in words is "one hundred twenty-three million, four hundred three thousand, one hundred forty-two".