4026520249 has 2 divisors, whose sum is σ = 4026520250. Its totient is φ = 4026520248.

The previous prime is 4026520243. The next prime is 4026520279. The reversal of 4026520249 is 9420256204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3544059024 + 482461225 = 59532^2 + 21965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4026520249 is a prime.

It is not a weakly prime, because it can be changed into another prime (4026520243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2013260124 + 2013260125.

It is an arithmetic number, because the mean of its divisors is an integer number (2013260125).

Almost surely, 2^4026520249 is an apocalyptic number.

It is an amenable number.

4026520249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4026520249 is an equidigital number, since it uses as much as digits as its factorization.

4026520249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 4026520249 is about 63454.8678116975. The cubic root of 4026520249 is about 1590.9015164927.

The spelling of 4026520249 in words is "four billion, twenty-six million, five hundred twenty thousand, two hundred forty-nine".