20126126 has 4 divisors (see below), whose sum is σ = 30189192. Its totient is φ = 10063062.

The previous prime is 20126101. The next prime is 20126129. The reversal of 20126126 is 62162102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20126098 and 20126107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126129) 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 as a sum of consecutive naturals, namely, 5031530 + ... + 5031533.

It is an arithmetic number, because the mean of its divisors is an integer number (7547298).

Almost surely, 2^20126126 is an apocalyptic number.

20126126 is a deficient number, since it is larger than the sum of its proper divisors (10063066).

20126126 is a wasteful number, since it uses less digits than its factorization.

20126126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10063065.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20126126 is about 4486.2151085297. The cubic root of 20126126 is about 272.0111641179.

Adding to 20126126 its reverse (62162102), we get a palindrome (82288228).

The spelling of 20126126 in words is "twenty million, one hundred twenty-six thousand, one hundred twenty-six".