1023423421 has 2 divisors, whose sum is σ = 1023423422. Its totient is φ = 1023423420.

The previous prime is 1023423389. The next prime is 1023423451. The reversal of 1023423421 is 1243243201.

1023423421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1023104196 + 319225 = 31986^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023423421 - 2⁵ = 1023423389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023423392 and 1023423401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023423451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511711710 + 511711711.

It is an arithmetic number, because the mean of its divisors is an integer number (511711711).

Almost surely, 2^1023423421 is an apocalyptic number.

It is an amenable number.

1023423421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023423421 is an equidigital number, since it uses as much as digits as its factorization.

1023423421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1023423421 is about 31990.9896845971. The cubic root of 1023423421 is about 1007.7476262683.

Adding to 1023423421 its reverse (1243243201), we get a palindrome (2266666622).

The spelling of 1023423421 in words is "one billion, twenty-three million, four hundred twenty-three thousand, four hundred twenty-one".