4162421 has 2 divisors, whose sum is σ = 4162422. Its totient is φ = 4162420.

The previous prime is 4162381. The next prime is 4162423. The reversal of 4162421 is 1242614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4157521 + 4900 = 2039^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 4162421 - 2¹⁸ = 3900277 is a prime.

It is a super-3 number, since 3×4162421³ (a number of 21 digits) contains 333 as substring.

Together with 4162423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4162393 and 4162402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4162423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2081210 + 2081211.

It is an arithmetic number, because the mean of its divisors is an integer number (2081211).

Almost surely, 2^4162421 is an apocalyptic number.

It is an amenable number.

4162421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4162421 is an equidigital number, since it uses as much as digits as its factorization.

4162421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 20.

The square root of 4162421 is about 2040.2012155667. The cubic root of 4162421 is about 160.8602235786.

The spelling of 4162421 in words is "four million, one hundred sixty-two thousand, four hundred twenty-one".