4153421 has 2 divisors, whose sum is σ = 4153422. Its totient is φ = 4153420.

The previous prime is 4153417. The next prime is 4153433. The reversal of 4153421 is 1243514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 1297321 = 1690^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 4153421 - 2² = 4153417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4153393 and 4153402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4153021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2076710 + 2076711.

It is an arithmetic number, because the mean of its divisors is an integer number (2076711).

Almost surely, 2^4153421 is an apocalyptic number.

It is an amenable number.

4153421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4153421 is an equidigital number, since it uses as much as digits as its factorization.

4153421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 20.

The square root of 4153421 is about 2037.9943572051. The cubic root of 4153421 is about 160.7442024213.

Adding to 4153421 its reverse (1243514), we get a palindrome (5396935).

The spelling of 4153421 in words is "four million, one hundred fifty-three thousand, four hundred twenty-one".