20124430024 has 8 divisors (see below), whose sum is σ = 37733306310. Its totient is φ = 10062215008.

The previous prime is 20124429961. The next prime is 20124430057. The reversal of 20124430024 is 42003442102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11140802500 + 8983627524 = 105550^2 + 94782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20124429977 and 20124430004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257776869 + ... + 1257776884.

Almost surely, 2^20124430024 is an apocalyptic number.

It is an amenable number.

20124430024 is a deficient number, since it is larger than the sum of its proper divisors (17608876286).

20124430024 is a wasteful number, since it uses less digits than its factorization.

20124430024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515553759 (or 2515553755 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20124430024 its reverse (42003442102), we get a palindrome (62127872126).

The spelling of 20124430024 in words is "twenty billion, one hundred twenty-four million, four hundred thirty thousand, twenty-four".