3142649 has 2 divisors, whose sum is σ = 3142650. Its totient is φ = 3142648.

The previous prime is 3142639. The next prime is 3142661. The reversal of 3142649 is 9462413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2050624 + 1092025 = 1432^2 + 1045^2 .

It is an emirp because it is prime and its reverse (9462413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3142649 - 2⁸ = 3142393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3142639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571324 + 1571325.

It is an arithmetic number, because the mean of its divisors is an integer number (1571325).

Almost surely, 2^3142649 is an apocalyptic number.

It is an amenable number.

3142649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3142649 is an equidigital number, since it uses as much as digits as its factorization.

3142649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 3142649 is about 1772.7518156809. The cubic root of 3142649 is about 146.4756023313.

The spelling of 3142649 in words is "three million, one hundred forty-two thousand, six hundred forty-nine".