123552138 has 8 divisors (see below), whose sum is σ = 247104288. Its totient is φ = 41184044.

The previous prime is 123552131. The next prime is 123552157. The reversal of 123552138 is 831255321.

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

123552138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (123552131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10296006 + ... + 10296017.

It is an arithmetic number, because the mean of its divisors is an integer number (30888036).

Almost surely, 2^123552138 is an apocalyptic number.

123552138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123552138 is a wasteful number, since it uses less digits than its factorization.

123552138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20592028.

The product of its digits is 7200, while the sum is 30.

The square root of 123552138 is about 11115.4009374381. The cubic root of 123552138 is about 498.0620154701.

The spelling of 123552138 in words is "one hundred twenty-three million, five hundred fifty-two thousand, one hundred thirty-eight".