81434122 has 64 divisors (see below), whose sum is σ = 161409024. Its totient is φ = 29874240.

The previous prime is 81434113. The next prime is 81434137. The reversal of 81434122 is 22143418.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293848 + ... + 294124.

It is an arithmetic number, because the mean of its divisors is an integer number (2522016).

Almost surely, 2^81434122 is an apocalyptic number.

81434122 is a deficient number, since it is larger than the sum of its proper divisors (79974902).

81434122 is a wasteful number, since it uses less digits than its factorization.

81434122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403.

The product of its digits is 1536, while the sum is 25.

The square root of 81434122 is about 9024.0856600544. The cubic root of 81434122 is about 433.4464723646.

The spelling of 81434122 in words is "eighty-one million, four hundred thirty-four thousand, one hundred twenty-two".