20144430042 has 32 divisors (see below), whose sum is σ = 45023477184. Its totient is φ = 5955484800.

The previous prime is 20144430037. The next prime is 20144430043. The reversal of 20144430042 is 24003444102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20144429994 and 20144430021.

It is not an unprimeable number, because it can be changed into a prime (20144430043) 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 15 ways as a sum of consecutive naturals, for example, 3719473 + ... + 3724884.

It is an arithmetic number, because the mean of its divisors is an integer number (1406983662).

Almost surely, 2^20144430042 is an apocalyptic number.

20144430042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20144430042 is an abundant number, since it is smaller than the sum of its proper divisors (24879047142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20144430042 is a wasteful number, since it uses less digits than its factorization.

20144430042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7444414.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20144430042 its reverse (24003444102), we get a palindrome (44147874144).

The spelling of 20144430042 in words is "twenty billion, one hundred forty-four million, four hundred thirty thousand, forty-two".