3129841 has 16 divisors (see below), whose sum is σ = 3769920. Its totient is φ = 2560320.

The previous prime is 3129839. The next prime is 3129859. The reversal of 3129841 is 1489213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3129841 - 2¹ = 3129839 is a prime.

Its product of digits (1728) is a multiple of the sum of its prime divisors (576).

It is not an unprimeable number, because it can be changed into a prime (3129811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5895 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (235620).

Almost surely, 2^3129841 is an apocalyptic number.

3129841 is the 946-th nonagonal number.

It is an amenable number.

3129841 is a deficient number, since it is larger than the sum of its proper divisors (640079).

3129841 is a wasteful number, since it uses less digits than its factorization.

3129841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its digits is 1728, while the sum is 28.

The square root of 3129841 is about 1769.1356646679. The cubic root of 3129841 is about 146.2763422003.

It can be divided in two parts, 312 and 9841, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 3129841 in words is "three million, one hundred twenty-nine thousand, eight hundred forty-one".