2413721 has 2 divisors, whose sum is σ = 2413722. Its totient is φ = 2413720.

The previous prime is 2413693. The next prime is 2413727. The reversal of 2413721 is 1273142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413721 + 1000000 = 1189^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2413721 - 2⁶ = 2413657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2413693 and 2413702.

It is not a weakly prime, because it can be changed into another prime (2413727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1206860 + 1206861.

It is an arithmetic number, because the mean of its divisors is an integer number (1206861).

2^2413721 is an apocalyptic number.

It is an amenable number.

2413721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2413721 is an equidigital number, since it uses as much as digits as its factorization.

2413721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 2413721 is about 1553.6154607882. The cubic root of 2413721 is about 134.1412522536.

Adding to 2413721 its reverse (1273142), we get a palindrome (3686863).

The spelling of 2413721 in words is "two million, four hundred thirteen thousand, seven hundred twenty-one".