4115352421 has 2 divisors, whose sum is σ = 4115352422. Its totient is φ = 4115352420.

The previous prime is 4115352403. The next prime is 4115352463. The reversal of 4115352421 is 1242535114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3719780100 + 395572321 = 60990^2 + 19889^2 .

It is a cyclic number.

It is not a de Polignac number, because 4115352421 - 2⁵ = 4115352389 is a prime.

It is a super-2 number, since 2×4115352421² = 33872251098061122482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4115352421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4115352221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2057676210 + 2057676211.

It is an arithmetic number, because the mean of its divisors is an integer number (2057676211).

Almost surely, 2^4115352421 is an apocalyptic number.

It is an amenable number.

4115352421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4115352421 is an equidigital number, since it uses as much as digits as its factorization.

4115352421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 4115352421 is about 64151.0126264582. The cubic root of 4115352421 is about 1602.5158883520.

Adding to 4115352421 its reverse (1242535114), we get a palindrome (5357887535).

The spelling of 4115352421 in words is "four billion, one hundred fifteen million, three hundred fifty-two thousand, four hundred twenty-one".