2129737 has 4 divisors (see below), whose sum is σ = 2132676. Its totient is φ = 2126800.

The previous prime is 2129719. The next prime is 2129741. The reversal of 2129737 is 7379212.

2129737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24336 + 2105401 = 156^2 + 1451^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129737 - 2¹¹ = 2127689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2129699 and 2129708.

It is not an unprimeable number, because it can be changed into a prime (2129797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (533169).

2^2129737 is an apocalyptic number.

It is an amenable number.

2129737 is a deficient number, since it is larger than the sum of its proper divisors (2939).

2129737 is a wasteful number, since it uses less digits than its factorization.

2129737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938.

The product of its digits is 5292, while the sum is 31.

The square root of 2129737 is about 1459.3618468358. The cubic root of 2129737 is about 128.6595393095.

The spelling of 2129737 in words is "two million, one hundred twenty-nine thousand, seven hundred thirty-seven".