20440242141 has 24 divisors (see below), whose sum is σ = 30366900480. Its totient is φ = 12218310720.

The previous prime is 20440242127. The next prime is 20440242233. The reversal of 20440242141 is 14124204402.

It is not a de Polignac number, because 20440242141 - 2¹⁸ = 20439979997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440242101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359181 + ... + 412178.

It is an arithmetic number, because the mean of its divisors is an integer number (1265287520).

Almost surely, 2^20440242141 is an apocalyptic number.

It is an amenable number.

20440242141 is a deficient number, since it is larger than the sum of its proper divisors (9926658339).

20440242141 is a wasteful number, since it uses less digits than its factorization.

20440242141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771457 (or 771446 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20440242141 its reverse (14124204402), we get a palindrome (34564446543).

The spelling of 20440242141 in words is "twenty billion, four hundred forty million, two hundred forty-two thousand, one hundred forty-one".