123171040 has 48 divisors (see below), whose sum is σ = 292299840. Its totient is φ = 49047040.

The previous prime is 123171031. The next prime is 123171071. The reversal of 123171040 is 40171321.

It is a super-2 number, since 2×123171040² = 30342210189363200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123170999 and 123171017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36630 + ... + 39850.

It is an arithmetic number, because the mean of its divisors is an integer number (6089580).

Almost surely, 2^123171040 is an apocalyptic number.

123171040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123171040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146149920).

123171040 is an abundant number, since it is smaller than the sum of its proper divisors (169128800).

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

123171040 is a wasteful number, since it uses less digits than its factorization.

123171040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475 (or 3467 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 123171040 is about 11098.2449062904. The cubic root of 123171040 is about 497.5493953632.

The spelling of 123171040 in words is "one hundred twenty-three million, one hundred seventy-one thousand, forty".