123871538 has 8 divisors (see below), whose sum is σ = 212351232. Its totient is φ = 53087796.

The previous prime is 123871493. The next prime is 123871577. The reversal of 123871538 is 835178321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4423970 + ... + 4423997.

It is an arithmetic number, because the mean of its divisors is an integer number (26543904).

Almost surely, 2^123871538 is an apocalyptic number.

123871538 is a deficient number, since it is larger than the sum of its proper divisors (88479694).

123871538 is an equidigital number, since it uses as much as digits as its factorization.

123871538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847976.

The product of its digits is 40320, while the sum is 38.

The square root of 123871538 is about 11129.7591168902. The cubic root of 123871538 is about 498.4908334154.

The spelling of 123871538 in words is "one hundred twenty-three million, eight hundred seventy-one thousand, five hundred thirty-eight".