78123000 has 64 divisors (see below), whose sum is σ = 243753120. Its totient is φ = 20832000.

The previous prime is 78122987. The next prime is 78123037. The reversal of 78123000 is 32187.

It is a super-2 number, since 2×78123000² = 12206406258000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10021 + ... + 16020.

Almost surely, 2^78123000 is an apocalyptic number.

It is an amenable number.

78123000 is an abundant number, since it is smaller than the sum of its proper divisors (165630120).

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

78123000 is a wasteful number, since it uses less digits than its factorization.

78123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26065 (or 26051 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 78123000 is about 8838.7216270228. The cubic root of 78123000 is about 427.4903386894.

Adding to 78123000 its reverse (32187), we get a palindrome (78155187).

The spelling of 78123000 in words is "seventy-eight million, one hundred twenty-three thousand".