123023878 has 4 divisors (see below), whose sum is σ = 184535820. Its totient is φ = 61511938.

The previous prime is 123023869. The next prime is 123023881. The reversal of 123023878 is 878320321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878320321 = 17707 ⋅49603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30755968 + ... + 30755971.

It is an arithmetic number, because the mean of its divisors is an integer number (46133955).

Almost surely, 2^123023878 is an apocalyptic number.

123023878 is a deficient number, since it is larger than the sum of its proper divisors (61511942).

123023878 is an equidigital number, since it uses as much as digits as its factorization.

123023878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61511941.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 123023878 is about 11091.6129575459. The cubic root of 123023878 is about 497.3511627695.

The spelling of 123023878 in words is "one hundred twenty-three million, twenty-three thousand, eight hundred seventy-eight".