2642449 has 2 divisors, whose sum is σ = 2642450. Its totient is φ = 2642448.

The previous prime is 2642389. The next prime is 2642473. The reversal of 2642449 is 9442462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 208849 = 1560^2 + 457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642449 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6⁷ + 4³ + 2²¹ + 4⁵ + 4⁹ + 9² .

It is a self number, because there is not a number n which added to its sum of digits gives 2642449.

It is not a weakly prime, because it can be changed into another prime (2642149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321224 + 1321225.

It is an arithmetic number, because the mean of its divisors is an integer number (1321225).

2^2642449 is an apocalyptic number.

It is an amenable number.

2642449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642449 is an equidigital number, since it uses as much as digits as its factorization.

2642449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 2642449 is about 1625.5611338858. The cubic root of 2642449 is about 138.2511878227.

The spelling of 2642449 in words is "two million, six hundred forty-two thousand, four hundred forty-nine".