2921129 has 2 divisors, whose sum is σ = 2921130. Its totient is φ = 2921128.

The previous prime is 2921111. The next prime is 2921131. The reversal of 2921129 is 9211292.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2181529 + 739600 = 1477^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2921129 - 2²⁰ = 1872553 is a prime.

Together with 2921131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2921098 and 2921107.

It is not a weakly prime, because it can be changed into another prime (2921179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460564 + 1460565.

It is an arithmetic number, because the mean of its divisors is an integer number (1460565).

2^2921129 is an apocalyptic number.

It is an amenable number.

2921129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921129 is an equidigital number, since it uses as much as digits as its factorization.

2921129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 2921129 is about 1709.1310657758. The cubic root of 2921129 is about 142.9498087829.

The spelling of 2921129 in words is "two million, nine hundred twenty-one thousand, one hundred twenty-nine".