20124412402 has 8 divisors (see below), whose sum is σ = 30187698156. Its totient is φ = 10061846352.

The previous prime is 20124412397. The next prime is 20124412409. The reversal of 20124412402 is 20421442102.

It can be written as a sum of positive squares in 2 ways, for example, as 19886358361 + 238054041 = 141019^2 + 15429^2 .

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 (20124412409) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 103533 + ... + 225760.

Almost surely, 2^20124412402 is an apocalyptic number.

20124412402 is a deficient number, since it is larger than the sum of its proper divisors (10063285754).

20124412402 is a wasteful number, since it uses less digits than its factorization.

20124412402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359852.

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

Adding to 20124412402 its reverse (20421442102), we get a palindrome (40545854504).

The spelling of 20124412402 in words is "twenty billion, one hundred twenty-four million, four hundred twelve thousand, four hundred two".