20290126 has 4 divisors (see below), whose sum is σ = 30435192. Its totient is φ = 10145062.

The previous prime is 20290099. The next prime is 20290133. The reversal of 20290126 is 62109202.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20290097 and 20290106.

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, 5072530 + ... + 5072533.

It is an arithmetic number, because the mean of its divisors is an integer number (7608798).

Almost surely, 2^20290126 is an apocalyptic number.

20290126 is a deficient number, since it is larger than the sum of its proper divisors (10145066).

20290126 is a wasteful number, since it uses less digits than its factorization.

20290126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10145065.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20290126 is about 4504.4562379937. The cubic root of 20290126 is about 272.7480041682.

Adding to 20290126 its reverse (62109202), we get a palindrome (82399328).

The spelling of 20290126 in words is "twenty million, two hundred ninety thousand, one hundred twenty-six".