73043420 has 12 divisors (see below), whose sum is σ = 153391224. Its totient is φ = 29217360.

The previous prime is 73043417. The next prime is 73043437. The reversal of 73043420 is 2434037.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826066 + ... + 1826105.

It is an arithmetic number, because the mean of its divisors is an integer number (12782602).

Almost surely, 2^73043420 is an apocalyptic number.

It is an amenable number.

73043420 is an abundant number, since it is smaller than the sum of its proper divisors (80347804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73043420 is a wasteful number, since it uses less digits than its factorization.

73043420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652180 (or 3652178 counting only the distinct ones).

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

The square root of 73043420 is about 8546.5443308977. The cubic root of 73043420 is about 418.0167648168.

Adding to 73043420 its reverse (2434037), we get a palindrome (75477457).

The spelling of 73043420 in words is "seventy-three million, forty-three thousand, four hundred twenty".