2643129 has 6 divisors (see below), whose sum is σ = 3817866. Its totient is φ = 1762080.

The previous prime is 2643119. The next prime is 2643131. The reversal of 2643129 is 9213462.

2643129 is a `hidden beast` number, since 2 + 643 + 12 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 393129 = 1500^2 + 627^2 .

It is not a de Polignac number, because 2643129 - 2⁵ = 2643097 is a prime.

It is a super-2 number, since 2×2643129² = 13972261821282, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 4 + 3¹³ + 1 + 2¹⁹ + 9 .

It is not an unprimeable number, because it can be changed into a prime (2643119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146832 + ... + 146849.

It is an arithmetic number, because the mean of its divisors is an integer number (636311).

2^2643129 is an apocalyptic number.

It is an amenable number.

2643129 is a deficient number, since it is larger than the sum of its proper divisors (1174737).

2643129 is a wasteful number, since it uses less digits than its factorization.

2643129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293687 (or 293684 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2643129 is about 1625.7702789755. The cubic root of 2643129 is about 138.2630458560.

It can be divided in two parts, 2643 and 129, that added together give a palindrome (2772).

The spelling of 2643129 in words is "two million, six hundred forty-three thousand, one hundred twenty-nine".