20541142 has 16 divisors (see below), whose sum is σ = 31888080. Its totient is φ = 9916128.

The previous prime is 20541121. The next prime is 20541149. The reversal of 20541142 is 24114502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9288 + ... + 11284.

It is an arithmetic number, because the mean of its divisors is an integer number (1993005).

Almost surely, 2^20541142 is an apocalyptic number.

20541142 is a deficient number, since it is larger than the sum of its proper divisors (11346938).

20541142 is a wasteful number, since it uses less digits than its factorization.

20541142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20541142 is about 4532.2336656443. The cubic root of 20541142 is about 273.8681501071.

Adding to 20541142 its reverse (24114502), we get a palindrome (44655644).

The spelling of 20541142 in words is "twenty million, five hundred forty-one thousand, one hundred forty-two".