20612141 has 4 divisors (see below), whose sum is σ = 22485984. Its totient is φ = 18738300.

The previous prime is 20612129. The next prime is 20612149. The reversal of 20612141 is 14121602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20612141 - 2¹⁸ = 20349997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936905 + ... + 936926.

It is an arithmetic number, because the mean of its divisors is an integer number (5621496).

Almost surely, 2^20612141 is an apocalyptic number.

It is an amenable number.

20612141 is a deficient number, since it is larger than the sum of its proper divisors (1873843).

20612141 is a wasteful number, since it uses less digits than its factorization.

20612141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873842.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20612141 is about 4540.0595811068. The cubic root of 20612141 is about 274.1833225388.

Adding to 20612141 its reverse (14121602), we get a palindrome (34733743).

The spelling of 20612141 in words is "twenty million, six hundred twelve thousand, one hundred forty-one".