20342269 has 2 divisors, whose sum is σ = 20342270. Its totient is φ = 20342268.

The previous prime is 20342249. The next prime is 20342303. The reversal of 20342269 is 96224302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 4897369 = 3930^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342269 - 2¹⁵ = 20309501 is a prime.

It is a super-2 number, since 2×20342269² = 827615816136722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20342209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171134 + 10171135.

It is an arithmetic number, because the mean of its divisors is an integer number (10171135).

Almost surely, 2^20342269 is an apocalyptic number.

It is an amenable number.

20342269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20342269 is an equidigital number, since it uses as much as digits as its factorization.

20342269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20342269 is about 4510.2404592217. The cubic root of 20342269 is about 272.9814466766.

The spelling of 20342269 in words is "twenty million, three hundred forty-two thousand, two hundred sixty-nine".