81419122 has 8 divisors (see below), whose sum is σ = 122175216. Its totient is φ = 40694052.

The previous prime is 81419083. The next prime is 81419141. The reversal of 81419122 is 22191418.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613 + ... + 12775.

It is an arithmetic number, because the mean of its divisors is an integer number (15271902).

Almost surely, 2^81419122 is an apocalyptic number.

81419122 is a deficient number, since it is larger than the sum of its proper divisors (40756094).

81419122 is a wasteful number, since it uses less digits than its factorization.

81419122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15512.

The product of its digits is 1152, while the sum is 28.

The square root of 81419122 is about 9023.2545126468. The cubic root of 81419122 is about 433.4198574102.

The spelling of 81419122 in words is "eighty-one million, four hundred nineteen thousand, one hundred twenty-two".