21041029 has 2 divisors, whose sum is σ = 21041030. Its totient is φ = 21041028.

The previous prime is 21041011. The next prime is 21041047. The reversal of 21041029 is 92014012.

It is a balanced prime because it is at equal distance from previous prime (21041011) and next prime (21041047).

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 9138529 = 3450^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 21041029 - 2⁵ = 21040997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21040997 and 21041015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21041099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10520514 + 10520515.

It is an arithmetic number, because the mean of its divisors is an integer number (10520515).

Almost surely, 2^21041029 is an apocalyptic number.

It is an amenable number.

21041029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21041029 is an equidigital number, since it uses as much as digits as its factorization.

21041029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 21041029 is about 4587.0501414308. The cubic root of 21041029 is about 276.0719767820.

The spelling of 21041029 in words is "twenty-one million, forty-one thousand, twenty-nine".