123000142 has 4 divisors (see below), whose sum is σ = 184500216. Its totient is φ = 61500070.

The previous prime is 123000133. The next prime is 123000149. The reversal of 123000142 is 241000321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241000321 = 457 ⋅527353.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30750034 + ... + 30750037.

It is an arithmetic number, because the mean of its divisors is an integer number (46125054).

Almost surely, 2^123000142 is an apocalyptic number.

123000142 is a deficient number, since it is larger than the sum of its proper divisors (61500074).

123000142 is an equidigital number, since it uses as much as digits as its factorization.

123000142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61500073.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 123000142 is about 11090.5429082620. The cubic root of 123000142 is about 497.3191747070.

Adding to 123000142 its reverse (241000321), we get a palindrome (364000463).

The spelling of 123000142 in words is "one hundred twenty-three million, one hundred forty-two", and thus it is an aban number.