123271870 has 16 divisors (see below), whose sum is σ = 223361568. Its totient is φ = 48981600.

The previous prime is 123271843. The next prime is 123271877. The reversal of 123271870 is 78172321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123271877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39309 + ... + 42328.

It is an arithmetic number, because the mean of its divisors is an integer number (13960098).

Almost surely, 2^123271870 is an apocalyptic number.

123271870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123271870 is a deficient number, since it is larger than the sum of its proper divisors (100089698).

123271870 is a wasteful number, since it uses less digits than its factorization.

123271870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81795.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 123271870 is about 11102.7865871591. The cubic root of 123271870 is about 497.6851259221.

The spelling of 123271870 in words is "one hundred twenty-three million, two hundred seventy-one thousand, eight hundred seventy".