20342029 has 2 divisors, whose sum is σ = 20342030. Its totient is φ = 20342028.

The previous prime is 20342011. The next prime is 20342039. The reversal of 20342029 is 92024302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16826404 + 3515625 = 4102^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342029 - 2⁷ = 20341901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20342009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171014 + 10171015.

It is an arithmetic number, because the mean of its divisors is an integer number (10171015).

Almost surely, 2^20342029 is an apocalyptic number.

It is an amenable number.

20342029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342029 is an equidigital number, since it uses as much as digits as its factorization.

20342029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20342029 is about 4510.2138530229. The cubic root of 20342029 is about 272.9803731188.

The spelling of 20342029 in words is "twenty million, three hundred forty-two thousand, twenty-nine".