78012123 has 8 divisors (see below), whose sum is σ = 118875648. Its totient is φ = 44578344.

The previous prime is 78012091. The next prime is 78012127. The reversal of 78012123 is 32121087.

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

It is not a de Polignac number, because 78012123 - 2⁵ = 78012091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78012093 and 78012102.

It is not an unprimeable number, because it can be changed into a prime (78012127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1857411 + ... + 1857452.

It is an arithmetic number, because the mean of its divisors is an integer number (14859456).

Almost surely, 2^78012123 is an apocalyptic number.

78012123 is a deficient number, since it is larger than the sum of its proper divisors (40863525).

78012123 is a wasteful number, since it uses less digits than its factorization.

78012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714873.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 78012123 is about 8832.4471693863. The cubic root of 78012123 is about 427.2880026817.

The spelling of 78012123 in words is "seventy-eight million, twelve thousand, one hundred twenty-three".