2129071 has 4 divisors (see below), whose sum is σ = 2433232. Its totient is φ = 1824912.

The previous prime is 2129069. The next prime is 2129107. The reversal of 2129071 is 1709212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2129071 - 2¹ = 2129069 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152070 + ... + 152083.

It is an arithmetic number, because the mean of its divisors is an integer number (608308).

2^2129071 is an apocalyptic number.

2129071 is a deficient number, since it is larger than the sum of its proper divisors (304161).

2129071 is an equidigital number, since it uses as much as digits as its factorization.

2129071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304160.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 2129071 is about 1459.1336470660. The cubic root of 2129071 is about 128.6461266695.

It can be divided in two parts, 21 and 29071, that added together give a palindrome (29092).

The spelling of 2129071 in words is "two million, one hundred twenty-nine thousand, seventy-one".