20142441021 has 16 divisors (see below), whose sum is σ = 27368440704. Its totient is φ = 13172462784.

The previous prime is 20142441017. The next prime is 20142441037. The reversal of 20142441021 is 12014424102.

It is not a de Polignac number, because 20142441021 - 2² = 20142441017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142401021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282800 + ... + 1298406.

It is an arithmetic number, because the mean of its divisors is an integer number (1710527544).

Almost surely, 2^20142441021 is an apocalyptic number.

It is an amenable number.

20142441021 is a deficient number, since it is larger than the sum of its proper divisors (7225999683).

20142441021 is a wasteful number, since it uses less digits than its factorization.

20142441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23780.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20142441021 its reverse (12014424102), we get a palindrome (32156865123).

The spelling of 20142441021 in words is "twenty billion, one hundred forty-two million, four hundred forty-one thousand, twenty-one".