4132123421 has 2 divisors, whose sum is σ = 4132123422. Its totient is φ = 4132123420.

The previous prime is 4132123381. The next prime is 4132123427. The reversal of 4132123421 is 1243212314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3746786521 + 385336900 = 61211^2 + 19630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4132123421 - 2³⁰ = 3058381597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4132123427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2066061710 + 2066061711.

It is an arithmetic number, because the mean of its divisors is an integer number (2066061711).

Almost surely, 2^4132123421 is an apocalyptic number.

It is an amenable number.

4132123421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4132123421 is an equidigital number, since it uses as much as digits as its factorization.

4132123421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 4132123421 is about 64281.5947297514. The cubic root of 4132123421 is about 1604.6898105599.

Adding to 4132123421 its reverse (1243212314), we get a palindrome (5375335735).

The spelling of 4132123421 in words is "four billion, one hundred thirty-two million, one hundred twenty-three thousand, four hundred twenty-one".