81042108 has 24 divisors (see below), whose sum is σ = 216112512. Its totient is φ = 23154864.

The previous prime is 81042107. The next prime is 81042119. The reversal of 81042108 is 80124018.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81042103) 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, 482310 + ... + 482477.

It is an arithmetic number, because the mean of its divisors is an integer number (9004688).

Almost surely, 2^81042108 is an apocalyptic number.

It is an amenable number.

81042108 is an abundant number, since it is smaller than the sum of its proper divisors (135070404).

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

81042108 is a wasteful number, since it uses less digits than its factorization.

81042108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964801 (or 964799 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 81042108 is about 9002.3390293856. The cubic root of 81042108 is about 432.7498337149.

The spelling of 81042108 in words is "eighty-one million, forty-two thousand, one hundred eight".