73421507 has 2 divisors, whose sum is σ = 73421508. Its totient is φ = 73421506.

The previous prime is 73421503. The next prime is 73421539. The reversal of 73421507 is 70512437.

It is a weak prime.

It is an emirp because it is prime and its reverse (70512437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73421507 - 2² = 73421503 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73421507.

It is not a weakly prime, because it can be changed into another prime (73421501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36710753 + 36710754.

It is an arithmetic number, because the mean of its divisors is an integer number (36710754).

Almost surely, 2^73421507 is an apocalyptic number.

73421507 is a deficient number, since it is larger than the sum of its proper divisors (1).

73421507 is an equidigital number, since it uses as much as digits as its factorization.

73421507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 73421507 is about 8568.6350721687. The cubic root of 73421507 is about 418.7367694045.

The spelling of 73421507 in words is "seventy-three million, four hundred twenty-one thousand, five hundred seven".