123240442042 has 8 divisors (see below), whose sum is σ = 184863815136. Its totient is φ = 61619170332.

The previous prime is 123240442033. The next prime is 123240442063. The reversal of 123240442042 is 240244042321.

123240442042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×123240442042² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123240442042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369478 + ... + 618865.

It is an arithmetic number, because the mean of its divisors is an integer number (23107976892).

Almost surely, 2^123240442042 is an apocalyptic number.

123240442042 is a deficient number, since it is larger than the sum of its proper divisors (61623373094).

123240442042 is an equidigital number, since it uses as much as digits as its factorization.

123240442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050692.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 123240442042 its reverse (240244042321), we get a palindrome (363484484363).

The spelling of 123240442042 in words is "one hundred twenty-three billion, two hundred forty million, four hundred forty-two thousand, forty-two".