20342055 has 16 divisors (see below), whose sum is σ = 32941440. Its totient is φ = 10717728.

The previous prime is 20342041. The next prime is 20342059. The reversal of 20342055 is 55024302.

It is not a de Polignac number, because 20342055 - 2⁴ = 20342039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6925 + ... + 9414.

It is an arithmetic number, because the mean of its divisors is an integer number (2058840).

Almost surely, 2^20342055 is an apocalyptic number.

20342055 is a deficient number, since it is larger than the sum of its proper divisors (12599385).

20342055 is a wasteful number, since it uses less digits than its factorization.

20342055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16430.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20342055 is about 4510.2167353687. The cubic root of 20342055 is about 272.9804894213.

Adding to 20342055 its reverse (55024302), we get a palindrome (75366357).

The spelling of 20342055 in words is "twenty million, three hundred forty-two thousand, fifty-five".