72134461 has 8 divisors (see below), whose sum is σ = 82678400. Its totient is φ = 61650288.

The previous prime is 72134459. The next prime is 72134477. The reversal of 72134461 is 16443127.

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

It is not a de Polignac number, because 72134461 - 2¹ = 72134459 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12321 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (10334800).

Almost surely, 2^72134461 is an apocalyptic number.

It is an amenable number.

72134461 is a deficient number, since it is larger than the sum of its proper divisors (10543939).

72134461 is a wasteful number, since it uses less digits than its factorization.

72134461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29883.

The product of its digits is 4032, while the sum is 28.

The square root of 72134461 is about 8493.2008689304. The cubic root of 72134461 is about 416.2755759279.

Adding to 72134461 its reverse (16443127), we get a palindrome (88577588).

The spelling of 72134461 in words is "seventy-two million, one hundred thirty-four thousand, four hundred sixty-one".