123510242042 has 12 divisors (see below), whose sum is σ = 203638787898. Its totient is φ = 56141019000.

The previous prime is 123510242041. The next prime is 123510242101. The reversal of 123510242042 is 240242015321.

It can be written as a sum of positive squares in only one way, i.e., 93991909561 + 29518332481 = 306581^2 + 171809^2 .

It is not an unprimeable number, because it can be changed into a prime (123510242041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255186209 + ... + 255186692.

Almost surely, 2^123510242042 is an apocalyptic number.

123510242042 is a deficient number, since it is larger than the sum of its proper divisors (80128545856).

123510242042 is a wasteful number, since it uses less digits than its factorization.

123510242042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510372925 (or 510372914 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 123510242042 its reverse (240242015321), we get a palindrome (363752257363).

The spelling of 123510242042 in words is "one hundred twenty-three billion, five hundred ten million, two hundred forty-two thousand, forty-two".