3147129 has 12 divisors (see below), whose sum is σ = 4598100. Its totient is φ = 2073984.

The previous prime is 3147121. The next prime is 3147143. The reversal of 3147129 is 9217413.

It can be written as a sum of positive squares in 2 ways, for example, as 522729 + 2624400 = 723^2 + 1620^2 .

It is not a de Polignac number, because 3147129 - 2³ = 3147121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3147121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1164 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (383175).

Almost surely, 2^3147129 is an apocalyptic number.

It is an amenable number.

3147129 is a deficient number, since it is larger than the sum of its proper divisors (1450971).

3147129 is a wasteful number, since it uses less digits than its factorization.

3147129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024 (or 4021 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3147129 is about 1774.0149379303. The cubic root of 3147129 is about 146.5451719974.

It can be divided in two parts, 314712 and 9, that added together give a square (314721 = 561²).

The spelling of 3147129 in words is "three million, one hundred forty-seven thousand, one hundred twenty-nine".