123012240120142 has 8 divisors (see below), whose sum is σ = 184772168105616. Its totient is φ = 61421517418272.

The previous prime is 123012240120109. The next prime is 123012240120149. The reversal of 123012240120142 is 241021042210321.

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

It is a super-2 number, since 2×123012240120142² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012240120149) 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, 42301319083 + ... + 42301321990.

It is an arithmetic number, because the mean of its divisors is an integer number (23096521013202).

Almost surely, 2^{123012240120142} is an apocalyptic number.

123012240120142 is a deficient number, since it is larger than the sum of its proper divisors (61759927985474).

123012240120142 is an equidigital number, since it uses as much as digits as its factorization.

123012240120142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84602641802.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 123012240120142 its reverse (241021042210321), we get a palindrome (364033282330463).

The spelling of 123012240120142 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty million, one hundred twenty thousand, one hundred forty-two".