43122403273 has 4 divisors (see below), whose sum is σ = 43397068420. Its totient is φ = 42847738128.

The previous prime is 43122403229. The next prime is 43122403297. The reversal of 43122403273 is 37230422134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37230422134 = 2 ⋅18615211067.

It can be written as a sum of positive squares in 2 ways, for example, as 17140831929 + 25981571344 = 130923^2 + 161188^2 .

It is a cyclic number.

It is not a de Polignac number, because 43122403273 - 2²¹ = 43120306121 is a prime.

It is a super-2 number, since 2×43122403273² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43122403873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137332338 + ... + 137332651.

It is an arithmetic number, because the mean of its divisors is an integer number (10849267105).

Almost surely, 2^43122403273 is an apocalyptic number.

It is an amenable number.

43122403273 is a deficient number, since it is larger than the sum of its proper divisors (274665147).

43122403273 is a wasteful number, since it uses less digits than its factorization.

43122403273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274665146.

The product of its (nonzero) digits is 24192, while the sum is 31.

The spelling of 43122403273 in words is "forty-three billion, one hundred twenty-two million, four hundred three thousand, two hundred seventy-three".