73442403 has 8 divisors (see below), whose sum is σ = 108803600. Its totient is φ = 48961584.

The previous prime is 73442401. The next prime is 73442407. The reversal of 73442403 is 30424437.

It is not a de Polignac number, because 73442403 - 2¹ = 73442401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2720089 = 73442403 / (7 + 3 + 4 + 4 + 2 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73442401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360018 + ... + 1360071.

It is an arithmetic number, because the mean of its divisors is an integer number (13600450).

Almost surely, 2^73442403 is an apocalyptic number.

73442403 is a deficient number, since it is larger than the sum of its proper divisors (35361197).

73442403 is a wasteful number, since it uses less digits than its factorization.

73442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720098 (or 2720092 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 73442403 is about 8569.8543161480. The cubic root of 73442403 is about 418.7764902526.

The spelling of 73442403 in words is "seventy-three million, four hundred forty-two thousand, four hundred three".