3601421 has 2 divisors, whose sum is σ = 3601422. Its totient is φ = 3601420.

The previous prime is 3601369. The next prime is 3601427. The reversal of 3601421 is 1241063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3258025 + 343396 = 1805^2 + 586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3601421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3601421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3601427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800710 + 1800711.

It is an arithmetic number, because the mean of its divisors is an integer number (1800711).

Almost surely, 2^3601421 is an apocalyptic number.

It is an amenable number.

3601421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3601421 is an equidigital number, since it uses as much as digits as its factorization.

3601421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3601421 is about 1897.7410255354. The cubic root of 3601421 is about 153.2820491169.

Adding to 3601421 its reverse (1241063), we get a palindrome (4842484).

The spelling of 3601421 in words is "three million, six hundred one thousand, four hundred twenty-one".