72041273 has 4 divisors (see below), whose sum is σ = 72483408. Its totient is φ = 71599140.

The previous prime is 72041251. The next prime is 72041279. The reversal of 72041273 is 37214027.

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: 37214027 = 19 ⋅1958633.

It is a cyclic number.

It is not a de Polignac number, because 72041273 - 2¹⁸ = 71779129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72041279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220823 + ... + 221148.

It is an arithmetic number, because the mean of its divisors is an integer number (18120852).

Almost surely, 2^72041273 is an apocalyptic number.

It is an amenable number.

72041273 is a deficient number, since it is larger than the sum of its proper divisors (442135).

72041273 is a wasteful number, since it uses less digits than its factorization.

72041273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442134.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72041273 is about 8487.7130606542. The cubic root of 72041273 is about 416.0962413701.

The spelling of 72041273 in words is "seventy-two million, forty-one thousand, two hundred seventy-three".