735247421 has 2 divisors, whose sum is σ = 735247422. Its totient is φ = 735247420.

The previous prime is 735247363. The next prime is 735247441. The reversal of 735247421 is 124742537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729540100 + 5707321 = 27010^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 735247421 - 2¹⁰ = 735246397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (735247441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367623710 + 367623711.

It is an arithmetic number, because the mean of its divisors is an integer number (367623711).

Almost surely, 2^735247421 is an apocalyptic number.

It is an amenable number.

735247421 is a deficient number, since it is larger than the sum of its proper divisors (1).

735247421 is an equidigital number, since it uses as much as digits as its factorization.

735247421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 35.

The square root of 735247421 is about 27115.4461700338. The cubic root of 735247421 is about 902.5636456779.

Adding to 735247421 its reverse (124742537), we get a palindrome (859989958).

The spelling of 735247421 in words is "seven hundred thirty-five million, two hundred forty-seven thousand, four hundred twenty-one".