1233403421 has 2 divisors, whose sum is σ = 1233403422. Its totient is φ = 1233403420.

The previous prime is 1233403387. The next prime is 1233403427. The reversal of 1233403421 is 1243043321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170597796 + 62805625 = 34214^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233403421 - 2¹⁴ = 1233387037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233403427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616701710 + 616701711.

It is an arithmetic number, because the mean of its divisors is an integer number (616701711).

Almost surely, 2^1233403421 is an apocalyptic number.

It is an amenable number.

1233403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233403421 is an equidigital number, since it uses as much as digits as its factorization.

1233403421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1233403421 is about 35119.8436927046. The cubic root of 1233403421 is about 1072.4285888014.

Adding to 1233403421 its reverse (1243043321), we get a palindrome (2476446742).

The spelling of 1233403421 in words is "one billion, two hundred thirty-three million, four hundred three thousand, four hundred twenty-one".