123140054 has 4 divisors (see below), whose sum is σ = 184710084. Its totient is φ = 61570026.

The previous prime is 123140011. The next prime is 123140063. The reversal of 123140054 is 450041321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450041321 = 59 ⋅7627819.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30785012 + ... + 30785015.

It is an arithmetic number, because the mean of its divisors is an integer number (46177521).

Almost surely, 2^123140054 is an apocalyptic number.

123140054 is a deficient number, since it is larger than the sum of its proper divisors (61570030).

123140054 is an equidigital number, since it uses as much as digits as its factorization.

123140054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61570029.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123140054 is about 11096.8488319883. The cubic root of 123140054 is about 497.5076692167.

Adding to 123140054 its reverse (450041321), we get a palindrome (573181375).

The spelling of 123140054 in words is "one hundred twenty-three million, one hundred forty thousand, fifty-four".