72442183 has 4 divisors (see below), whose sum is σ = 79027848. Its totient is φ = 65856520.

The previous prime is 72442159. The next prime is 72442187. The reversal of 72442183 is 38124427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38124427 = 11 ⋅3465857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72442183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72442187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292816 + ... + 3292837.

It is an arithmetic number, because the mean of its divisors is an integer number (19756962).

Almost surely, 2^72442183 is an apocalyptic number.

72442183 is a deficient number, since it is larger than the sum of its proper divisors (6585665).

72442183 is a wasteful number, since it uses less digits than its factorization.

72442183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6585664.

The product of its digits is 10752, while the sum is 31.

The square root of 72442183 is about 8511.2973746662. The cubic root of 72442183 is about 416.8666731162.

The spelling of 72442183 in words is "seventy-two million, four hundred forty-two thousand, one hundred eighty-three".