20542341 has 16 divisors (see below), whose sum is σ = 29165184. Its totient is φ = 12816384.

The previous prime is 20542331. The next prime is 20542343. The reversal of 20542341 is 14324502.

It is not a de Polignac number, because 20542341 - 2⁷ = 20542213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542343) 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, 8800 + ... + 10886.

It is an arithmetic number, because the mean of its divisors is an integer number (1822824).

Almost surely, 2^20542341 is an apocalyptic number.

It is an amenable number.

20542341 is a deficient number, since it is larger than the sum of its proper divisors (8622843).

20542341 is a wasteful number, since it uses less digits than its factorization.

20542341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20542341 is about 4532.3659384476. The cubic root of 20542341 is about 273.8734786249.

Adding to 20542341 its reverse (14324502), we get a palindrome (34866843).

It can be divided in two parts, 20 and 542341, that added together give a triangular number (542361 = T₁₀₄₁).

The spelling of 20542341 in words is "twenty million, five hundred forty-two thousand, three hundred forty-one".