73419421 has 2 divisors, whose sum is σ = 73419422. Its totient is φ = 73419420.

The previous prime is 73419407. The next prime is 73419431. The reversal of 73419421 is 12491437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72488196 + 931225 = 8514^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 73419421 - 2⁹ = 73418909 is a prime.

It is a super-2 number, since 2×73419421² = 10780822759950482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73419431) by changing a digit.

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, 36709710 + 36709711.

It is an arithmetic number, because the mean of its divisors is an integer number (36709711).

Almost surely, 2^73419421 is an apocalyptic number.

It is an amenable number.

73419421 is a deficient number, since it is larger than the sum of its proper divisors (1).

73419421 is an equidigital number, since it uses as much as digits as its factorization.

73419421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 73419421 is about 8568.5133483003. The cubic root of 73419421 is about 418.7328037492.

The spelling of 73419421 in words is "seventy-three million, four hundred nineteen thousand, four hundred twenty-one".