4132421 has 2 divisors, whose sum is σ = 4132422. Its totient is φ = 4132420.

The previous prime is 4132409. The next prime is 4132439. The reversal of 4132421 is 1242314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2280100 + 1852321 = 1510^2 + 1361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4132421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4132421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4132621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2066210 + 2066211.

It is an arithmetic number, because the mean of its divisors is an integer number (2066211).

Almost surely, 2^4132421 is an apocalyptic number.

It is an amenable number.

4132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4132421 is an equidigital number, since it uses as much as digits as its factorization.

4132421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 17.

The square root of 4132421 is about 2032.8357041335. The cubic root of 4132421 is about 160.4728330749.

Adding to 4132421 its reverse (1242314), we get a palindrome (5374735).

The spelling of 4132421 in words is "four million, one hundred thirty-two thousand, four hundred twenty-one".