12072073 has 4 divisors (see below), whose sum is σ = 13000708. Its totient is φ = 11143440.

The previous prime is 12072037. The next prime is 12072119. The reversal of 12072073 is 37027021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1261129 + 10810944 = 1123^2 + 3288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12072073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12072013) 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, 464298 + ... + 464323.

It is an arithmetic number, because the mean of its divisors is an integer number (3250177).

Almost surely, 2^12072073 is an apocalyptic number.

12072073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12072073 is a deficient number, since it is larger than the sum of its proper divisors (928635).

12072073 is an equidigital number, since it uses as much as digits as its factorization.

12072073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928634.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 12072073 is about 3474.4888832748. The cubic root of 12072073 is about 229.4002838733.

Adding to 12072073 its reverse (37027021), we get a palindrome (49099094).

The spelling of 12072073 in words is "twelve million, seventy-two thousand, seventy-three".