123303421 has 2 divisors, whose sum is σ = 123303422. Its totient is φ = 123303420.

The previous prime is 123303409. The next prime is 123303443. The reversal of 123303421 is 124303321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101727396 + 21576025 = 10086^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 123303421 - 2¹³ = 123295229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123303491) 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, 61651710 + 61651711.

It is an arithmetic number, because the mean of its divisors is an integer number (61651711).

Almost surely, 2^123303421 is an apocalyptic number.

It is an amenable number.

123303421 is a deficient number, since it is larger than the sum of its proper divisors (1).

123303421 is an equidigital number, since it uses as much as digits as its factorization.

123303421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123303421 is about 11104.2073557729. The cubic root of 123303421 is about 497.7275825505.

Adding to 123303421 its reverse (124303321), we get a palindrome (247606742).

It can be divided in two parts, 12330 and 3421, that added together give a palindrome (15751).

The spelling of 123303421 in words is "one hundred twenty-three million, three hundred three thousand, four hundred twenty-one".