123142944 has 24 divisors (see below), whose sum is σ = 323250480. Its totient is φ = 41047616.

The previous prime is 123142913. The next prime is 123142949. The reversal of 123142944 is 449241321.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (123142949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641274 + ... + 641465.

It is an arithmetic number, because the mean of its divisors is an integer number (13468770).

Almost surely, 2^123142944 is an apocalyptic number.

It is an amenable number.

123142944 is an abundant number, since it is smaller than the sum of its proper divisors (200107536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123142944 is a wasteful number, since it uses less digits than its factorization.

123142944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282752 (or 1282744 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 123142944 is about 11096.9790483717. The cubic root of 123142944 is about 497.5115612239.

The spelling of 123142944 in words is "one hundred twenty-three million, one hundred forty-two thousand, nine hundred forty-four".