81024122 has 8 divisors (see below), whose sum is σ = 121985472. Its totient is φ = 40362300.

The previous prime is 81024103. The next prime is 81024131. The reversal of 81024122 is 22142018.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 81024094 and 81024103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74204 + ... + 75287.

It is an arithmetic number, because the mean of its divisors is an integer number (15248184).

Almost surely, 2^81024122 is an apocalyptic number.

81024122 is a deficient number, since it is larger than the sum of its proper divisors (40961350).

81024122 is a wasteful number, since it uses less digits than its factorization.

81024122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149764.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 81024122 is about 9001.3400113539. The cubic root of 81024122 is about 432.7178173776.

The spelling of 81024122 in words is "eighty-one million, twenty-four thousand, one hundred twenty-two".