73712242 has 4 divisors (see below), whose sum is σ = 110568366. Its totient is φ = 36856120.

The previous prime is 73712213. The next prime is 73712257. The reversal of 73712242 is 24221737.

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

It can be written as a sum of positive squares in only one way, i.e., 71250481 + 2461761 = 8441^2 + 1569^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73712242.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18428059 + ... + 18428062.

Almost surely, 2^73712242 is an apocalyptic number.

73712242 is a deficient number, since it is larger than the sum of its proper divisors (36856124).

73712242 is a wasteful number, since it uses less digits than its factorization.

73712242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36856123.

The product of its digits is 4704, while the sum is 28.

The square root of 73712242 is about 8585.5833814599. The cubic root of 73712242 is about 419.2887470712.

Adding to 73712242 its reverse (24221737), we get a palindrome (97933979).

The spelling of 73712242 in words is "seventy-three million, seven hundred twelve thousand, two hundred forty-two".