72741 has 4 divisors (see below), whose sum is σ = 96992. Its totient is φ = 48492.

The previous prime is 72739. The next prime is 72763. The reversal of 72741 is 14727.

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: 14727 = 3 ⋅4909.

It is not a de Polignac number, because 72741 - 2¹ = 72739 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12121 + ... + 12126.

It is an arithmetic number, because the mean of its divisors is an integer number (24248).

2⁷²⁷⁴¹ is an apocalyptic number.

It is an amenable number.

72741 is a deficient number, since it is larger than the sum of its proper divisors (24251).

72741 is a wasteful number, since it uses less digits than its factorization.

72741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24250.

The product of its digits is 392, while the sum is 21.

The square root of 72741 is about 269.7053948292. The cubic root of 72741 is about 41.7439065055.

The spelling of 72741 in words is "seventy-two thousand, seven hundred forty-one", and thus it is an iban number.