72134481 has 8 divisors (see below), whose sum is σ = 96755904. Its totient is φ = 47801360.

The previous prime is 72134477. The next prime is 72134501. The reversal of 72134481 is 18443127.

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

It is a cyclic number.

It is not a de Polignac number, because 72134481 - 2² = 72134477 is a prime.

It is a super-2 number, since 2×72134481² = 10406766698278722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72134441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71490 + ... + 72491.

It is an arithmetic number, because the mean of its divisors is an integer number (12094488).

Almost surely, 2^72134481 is an apocalyptic number.

It is an amenable number.

72134481 is a deficient number, since it is larger than the sum of its proper divisors (24621423).

72134481 is a wasteful number, since it uses less digits than its factorization.

72134481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144151.

The product of its digits is 5376, while the sum is 30.

The square root of 72134481 is about 8493.2020463427. The cubic root of 72134481 is about 416.2756144001.

The spelling of 72134481 in words is "seventy-two million, one hundred thirty-four thousand, four hundred eighty-one".