20126422 has 4 divisors (see below), whose sum is σ = 30189636. Its totient is φ = 10063210.

The previous prime is 20126417. The next prime is 20126437. The reversal of 20126422 is 22462102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20126422.

It is a congruent number.

It is an unprimeable number.

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, 5031604 + ... + 5031607.

It is an arithmetic number, because the mean of its divisors is an integer number (7547409).

Almost surely, 2^20126422 is an apocalyptic number.

20126422 is a deficient number, since it is larger than the sum of its proper divisors (10063214).

20126422 is a wasteful number, since it uses less digits than its factorization.

20126422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10063213.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20126422 is about 4486.2480983557. The cubic root of 20126422 is about 272.0124976236.

Adding to 20126422 its reverse (22462102), we get a palindrome (42588524).

The spelling of 20126422 in words is "twenty million, one hundred twenty-six thousand, four hundred twenty-two".