123112521242 has 8 divisors (see below), whose sum is σ = 185774583456. Its totient is φ = 61187660092.

The previous prime is 123112521241. The next prime is 123112521253. The reversal of 123112521242 is 242125211321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (123112521241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184299848 + ... + 184300515.

It is an arithmetic number, because the mean of its divisors is an integer number (23221822932).

Almost surely, 2^123112521242 is an apocalyptic number.

123112521242 is a deficient number, since it is larger than the sum of its proper divisors (62662062214).

123112521242 is a wasteful number, since it uses less digits than its factorization.

123112521242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368600532.

The product of its digits is 1920, while the sum is 26.

Adding to 123112521242 its reverse (242125211321), we get a palindrome (365237732563).

The spelling of 123112521242 in words is "one hundred twenty-three billion, one hundred twelve million, five hundred twenty-one thousand, two hundred forty-two".