4252121 has 2 divisors, whose sum is σ = 4252122. Its totient is φ = 4252120.

The previous prime is 4252117. The next prime is 4252123. The reversal of 4252121 is 1212524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3553225 + 698896 = 1885^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 4252121 - 2² = 4252117 is a prime.

Together with 4252123, it forms a pair of twin primes.

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 4252121.

It is not a weakly prime, because it can be changed into another prime (4252123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2126060 + 2126061.

It is an arithmetic number, because the mean of its divisors is an integer number (2126061).

Almost surely, 2^4252121 is an apocalyptic number.

It is an amenable number.

4252121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4252121 is an equidigital number, since it uses as much as digits as its factorization.

4252121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 17.

The square root of 4252121 is about 2062.0671667043. The cubic root of 4252121 is about 162.0075315301.

Adding to 4252121 its reverse (1212524), we get a palindrome (5464645).

The spelling of 4252121 in words is "four million, two hundred fifty-two thousand, one hundred twenty-one".