123271040 has 32 divisors (see below), whose sum is σ = 294696360. Its totient is φ = 49308160.

The previous prime is 123271039. The next prime is 123271073. The reversal of 123271040 is 40172321.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95666 + ... + 96945.

Almost surely, 2^123271040 is an apocalyptic number.

123271040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123271040 is an abundant number, since it is smaller than the sum of its proper divisors (171425320).

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

123271040 is an equidigital number, since it uses as much as digits as its factorization.

123271040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192630 (or 192618 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 123271040 is about 11102.7492090923. The cubic root of 123271040 is about 497.6840089342.

The spelling of 123271040 in words is "one hundred twenty-three million, two hundred seventy-one thousand, forty".