123530142 has 32 divisors (see below), whose sum is σ = 253566720. Its totient is φ = 40098240.

The previous prime is 123530117. The next prime is 123530149. The reversal of 123530142 is 241035321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123530149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133959 + ... + 134877.

It is an arithmetic number, because the mean of its divisors is an integer number (7923960).

Almost surely, 2^123530142 is an apocalyptic number.

123530142 is an abundant number, since it is smaller than the sum of its proper divisors (130036578).

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

123530142 is a wasteful number, since it uses less digits than its factorization.

123530142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123530142 is about 11114.4114554033. The cubic root of 123530142 is about 498.0324570385.

Adding to 123530142 its reverse (241035321), we get a palindrome (364565463).

The spelling of 123530142 in words is "one hundred twenty-three million, five hundred thirty thousand, one hundred forty-two".