73042403 has 16 divisors (see below), whose sum is σ = 90251520. Its totient is φ = 57705696.

The previous prime is 73042379. The next prime is 73042429. The reversal of 73042403 is 30424037.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 73042403 - 2⁶ = 73042339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73041403) 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 15 ways as a sum of consecutive naturals, for example, 2501 + ... + 12342.

It is an arithmetic number, because the mean of its divisors is an integer number (5640720).

Almost surely, 2^73042403 is an apocalyptic number.

73042403 is a deficient number, since it is larger than the sum of its proper divisors (17209117).

73042403 is a wasteful number, since it uses less digits than its factorization.

73042403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14906.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 73042403 is about 8546.4848329591. The cubic root of 73042403 is about 418.0148247606.

The spelling of 73042403 in words is "seventy-three million, forty-two thousand, four hundred three".