730542421 has 12 divisors (see below), whose sum is σ = 852564960. Its totient is φ = 624152760.

The previous prime is 730542409. The next prime is 730542431. The reversal of 730542421 is 124245037.

730542421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 730542421 - 2¹³ = 730534229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 730542421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730542431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8731 + ... + 39208.

It is an arithmetic number, because the mean of its divisors is an integer number (71047080).

Almost surely, 2^730542421 is an apocalyptic number.

It is an amenable number.

730542421 is a deficient number, since it is larger than the sum of its proper divisors (122022539).

730542421 is a wasteful number, since it uses less digits than its factorization.

730542421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48264 (or 48257 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 730542421 is about 27028.5482592018. The cubic root of 730542421 is about 900.6342940151.

Adding to 730542421 its reverse (124245037), we get a palindrome (854787458).

The spelling of 730542421 in words is "seven hundred thirty million, five hundred forty-two thousand, four hundred twenty-one".