20402412126 has 8 divisors (see below), whose sum is σ = 40804824264. Its totient is φ = 6800804040.

The previous prime is 20402412109. The next prime is 20402412127. The reversal of 20402412126 is 62121420402.

It is a happy number.

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

20402412126 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20402412096 and 20402412105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402412127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700201005 + ... + 1700201016.

It is an arithmetic number, because the mean of its divisors is an integer number (5100603033).

Almost surely, 2^20402412126 is an apocalyptic number.

20402412126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20402412126 is a wasteful number, since it uses less digits than its factorization.

20402412126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400402026.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20402412126 its reverse (62121420402), we get a palindrome (82523832528).

The spelling of 20402412126 in words is "twenty billion, four hundred two million, four hundred twelve thousand, one hundred twenty-six".