73212123 has 4 divisors (see below), whose sum is σ = 97616168. Its totient is φ = 48808080.

The previous prime is 73212119. The next prime is 73212127. The reversal of 73212123 is 32121237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32121237 = 3 ⋅10707079.

It is an interprime number because it is at equal distance from previous prime (73212119) and next prime (73212127).

It is not a de Polignac number, because 73212123 - 2² = 73212119 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 73212123.

It is not an unprimeable number, because it can be changed into a prime (73212127) 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 3 ways as a sum of consecutive naturals, for example, 12202018 + ... + 12202023.

It is an arithmetic number, because the mean of its divisors is an integer number (24404042).

Almost surely, 2^73212123 is an apocalyptic number.

73212123 is a deficient number, since it is larger than the sum of its proper divisors (24404045).

73212123 is a wasteful number, since it uses less digits than its factorization.

73212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24404044.

The product of its digits is 504, while the sum is 21.

The square root of 73212123 is about 8556.4083002157. The cubic root of 73212123 is about 418.3383382028.

The spelling of 73212123 in words is "seventy-three million, two hundred twelve thousand, one hundred twenty-three".