735421 has 2 divisors, whose sum is σ = 735422. Its totient is φ = 735420.

The previous prime is 735419. The next prime is 735431. The reversal of 735421 is 124537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509796 + 225625 = 714^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 735421 - 2¹ = 735419 is a prime.

Together with 735419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 735392 and 735401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (735431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367710 + 367711.

It is an arithmetic number, because the mean of its divisors is an integer number (367711).

2⁷³⁵⁴²¹ is an apocalyptic number.

It is an amenable number.

735421 is a deficient number, since it is larger than the sum of its proper divisors (1).

735421 is an equidigital number, since it uses as much as digits as its factorization.

735421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 22.

The square root of 735421 is about 857.5669070108. The cubic root of 735421 is about 90.2634666563.

Adding to 735421 its reverse (124537), we get a palindrome (859958).

It can be divided in two parts, 735 and 421, that added together give a square (1156 = 34²).

The spelling of 735421 in words is "seven hundred thirty-five thousand, four hundred twenty-one".