81174124 has 6 divisors (see below), whose sum is σ = 142054724. Its totient is φ = 40587060.

The previous prime is 81174101. The next prime is 81174131. The reversal of 81174124 is 42147118.

It is a junction number, because it is equal to n+sod(n) for n = 81174092 and 81174101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10146762 + ... + 10146769.

Almost surely, 2^81174124 is an apocalyptic number.

It is an amenable number.

81174124 is a deficient number, since it is larger than the sum of its proper divisors (60880600).

81174124 is a wasteful number, since it uses less digits than its factorization.

81174124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20293535 (or 20293533 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 81174124 is about 9009.6683623761. The cubic root of 81174124 is about 432.9846865601.

The spelling of 81174124 in words is "eighty-one million, one hundred seventy-four thousand, one hundred twenty-four".