81048842 has 16 divisors (see below), whose sum is σ = 141777600. Its totient is φ = 34734924.

The previous prime is 81048827. The next prime is 81048853. The reversal of 81048842 is 24884018.

It is a super-5 number, since 5×81048842⁵ (a number of 41 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58388 + ... + 59759.

It is an arithmetic number, because the mean of its divisors is an integer number (8861100).

Almost surely, 2^81048842 is an apocalyptic number.

81048842 is a deficient number, since it is larger than the sum of its proper divisors (60728758).

81048842 is a wasteful number, since it uses less digits than its factorization.

81048842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118170 (or 118156 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 81048842 is about 9002.7130355243. The cubic root of 81048842 is about 432.7618194868.

The spelling of 81048842 in words is "eighty-one million, forty-eight thousand, eight hundred forty-two".