123213240242 has 16 divisors (see below), whose sum is σ = 185562316800. Its totient is φ = 61359335520.

The previous prime is 123213240233. The next prime is 123213240287. The reversal of 123213240242 is 242042312321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209359 + ... + 1307277.

It is an arithmetic number, because the mean of its divisors is an integer number (11597644800).

Almost surely, 2^123213240242 is an apocalyptic number.

123213240242 is a deficient number, since it is larger than the sum of its proper divisors (62349076558).

123213240242 is a wasteful number, since it uses less digits than its factorization.

123213240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100441.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 123213240242 its reverse (242042312321), we get a palindrome (365255552563).

The spelling of 123213240242 in words is "one hundred twenty-three billion, two hundred thirteen million, two hundred forty thousand, two hundred forty-two".