20124124402 has 8 divisors (see below), whose sum is σ = 30303643356. Its totient is φ = 10022909952.

The previous prime is 20124124369. The next prime is 20124124409. The reversal of 20124124402 is 20442142102.

It can be written as a sum of positive squares in 2 ways, for example, as 12038697841 + 8085426561 = 109721^2 + 89919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20124124409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19575483 + ... + 19576510.

Almost surely, 2^20124124402 is an apocalyptic number.

20124124402 is a deficient number, since it is larger than the sum of its proper divisors (10179518954).

20124124402 is a wasteful number, since it uses less digits than its factorization.

20124124402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39152252.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20124124402 its reverse (20442142102), we get a palindrome (40566266504).

The spelling of 20124124402 in words is "twenty billion, one hundred twenty-four million, one hundred twenty-four thousand, four hundred two".