73420001 has 2 divisors, whose sum is σ = 73420002. Its totient is φ = 73420000.

The previous prime is 73419977. The next prime is 73420003. The reversal of 73420001 is 10002437.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 6507601 = 8180^2 + 2551^2 .

It is an emirp because it is prime and its reverse (10002437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73420001 - 2⁶ = 73419937 is a prime.

Together with 73420003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73420003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36710000 + 36710001.

It is an arithmetic number, because the mean of its divisors is an integer number (36710001).

Almost surely, 2^73420001 is an apocalyptic number.

It is an amenable number.

73420001 is a deficient number, since it is larger than the sum of its proper divisors (1).

73420001 is an equidigital number, since it uses as much as digits as its factorization.

73420001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 73420001 is about 8568.5471930777. The cubic root of 73420001 is about 418.7339063838.

Adding to 73420001 its reverse (10002437), we get a palindrome (83422438).

The spelling of 73420001 in words is "seventy-three million, four hundred twenty thousand, one".