123087078 has 72 divisors (see below), whose sum is σ = 283709088. Its totient is φ = 38547264.

The previous prime is 123087077. The next prime is 123087103. The reversal of 123087078 is 870780321.

It is a super-4 number, since 4×123087078⁴ (a number of 33 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123087077) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 711400 + ... + 711572.

It is an arithmetic number, because the mean of its divisors is an integer number (3940404).

Almost surely, 2^123087078 is an apocalyptic number.

123087078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123087078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141854544).

123087078 is an abundant number, since it is smaller than the sum of its proper divisors (160622010).

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

123087078 is a wasteful number, since it uses less digits than its factorization.

123087078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 123087078 is about 11094.4615912626. The cubic root of 123087078 is about 497.4363148365.

The spelling of 123087078 in words is "one hundred twenty-three million, eighty-seven thousand, seventy-eight".