20124104402 has 4 divisors (see below), whose sum is σ = 30186156606. Its totient is φ = 10062052200.

The previous prime is 20124104309. The next prime is 20124104431. The reversal of 20124104402 is 20440142102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15296495041 + 4827609361 = 123679^2 + 69481^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5031026099 + ... + 5031026102.

Almost surely, 2^20124104402 is an apocalyptic number.

20124104402 is a deficient number, since it is larger than the sum of its proper divisors (10062052204).

20124104402 is a wasteful number, since it uses less digits than its factorization.

20124104402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062052203.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20124104402 its reverse (20440142102), we get a palindrome (40564246504).

It can be divided in two parts, 20124104 and 402, that multiplied together give a palindrome (8089889808).

The spelling of 20124104402 in words is "twenty billion, one hundred twenty-four million, one hundred four thousand, four hundred two".