73081129 has 4 divisors (see below), whose sum is σ = 79724880. Its totient is φ = 66437380.

The previous prime is 73081093. The next prime is 73081157. The reversal of 73081129 is 92118037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92118037 = 11 ⋅8374367.

It is a cyclic number.

It is not a de Polignac number, because 73081129 - 2¹⁷ = 72950057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73081129.

It is not an unprimeable number, because it can be changed into a prime (73081199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321859 + ... + 3321880.

It is an arithmetic number, because the mean of its divisors is an integer number (19931220).

Almost surely, 2^73081129 is an apocalyptic number.

It is an amenable number.

73081129 is a deficient number, since it is larger than the sum of its proper divisors (6643751).

73081129 is a wasteful number, since it uses less digits than its factorization.

73081129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643750.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 73081129 is about 8548.7501425647. The cubic root of 73081129 is about 418.0886867978.

The spelling of 73081129 in words is "seventy-three million, eighty-one thousand, one hundred twenty-nine".