123120142 has 8 divisors (see below), whose sum is σ = 184853376. Its totient is φ = 61502352.

The previous prime is 123120139. The next prime is 123120149. The reversal of 123120142 is 241021321.

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

It is a super-2 number, since 2×123120142² = 30317138732200328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120149) 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, 26143 + ... + 30490.

It is an arithmetic number, because the mean of its divisors is an integer number (23106672).

Almost surely, 2^123120142 is an apocalyptic number.

123120142 is a deficient number, since it is larger than the sum of its proper divisors (61733234).

123120142 is a wasteful number, since it uses less digits than its factorization.

123120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57722.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 123120142 is about 11095.9516040761. The cubic root of 123120142 is about 497.4808517667.

Adding to 123120142 its reverse (241021321), we get a palindrome (364141463).

The spelling of 123120142 in words is "one hundred twenty-three million, one hundred twenty thousand, one hundred forty-two".