2142529 has 2 divisors, whose sum is σ = 2142530. Its totient is φ = 2142528.

The previous prime is 2142523. The next prime is 2142533. The reversal of 2142529 is 9252412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2108304 + 34225 = 1452^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142529 - 2³ = 2142521 is a prime.

It is an Ulam number.

2142529 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2142521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071264 + 1071265.

It is an arithmetic number, because the mean of its divisors is an integer number (1071265).

2^2142529 is an apocalyptic number.

It is an amenable number.

2142529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142529 is an equidigital number, since it uses as much as digits as its factorization.

2142529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 2142529 is about 1463.7380230082. The cubic root of 2142529 is about 128.9166177899.

The spelling of 2142529 in words is "two million, one hundred forty-two thousand, five hundred twenty-nine".