2129371 has 2 divisors, whose sum is σ = 2129372. Its totient is φ = 2129370.

The previous prime is 2129357. The next prime is 2129389. The reversal of 2129371 is 1739212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129371 - 2¹⁹ = 1605083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2129321) 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 as a sum of consecutive naturals, namely, 1064685 + 1064686.

It is an arithmetic number, because the mean of its divisors is an integer number (1064686).

2^2129371 is an apocalyptic number.

2129371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129371 is an equidigital number, since it uses as much as digits as its factorization.

2129371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 25.

The square root of 2129371 is about 1459.2364441721. The cubic root of 2129371 is about 128.6521687454.

It can be divided in two parts, 2129 and 371, that added together give a square (2500 = 50²).

The spelling of 2129371 in words is "two million, one hundred twenty-nine thousand, three hundred seventy-one".