123072078 has 32 divisors (see below), whose sum is σ = 266988960. Its totient is φ = 37667840.

The previous prime is 123072049. The next prime is 123072083. The reversal of 123072078 is 870270321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10533 + ... + 18896.

It is an arithmetic number, because the mean of its divisors is an integer number (8343405).

Almost surely, 2^123072078 is an apocalyptic number.

123072078 is an abundant number, since it is smaller than the sum of its proper divisors (143916882).

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

123072078 is a wasteful number, since it uses less digits than its factorization.

123072078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 123072078 is about 11093.7855576895. The cubic root of 123072078 is about 497.4161073325.

The spelling of 123072078 in words is "one hundred twenty-three million, seventy-two thousand, seventy-eight".