20743126 has 4 divisors (see below), whose sum is σ = 31114692. Its totient is φ = 10371562.

The previous prime is 20743103. The next prime is 20743181. The reversal of 20743126 is 62134702.

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 20743126.

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, 5185780 + ... + 5185783.

It is an arithmetic number, because the mean of its divisors is an integer number (7778673).

Almost surely, 2^20743126 is an apocalyptic number.

20743126 is a deficient number, since it is larger than the sum of its proper divisors (10371566).

20743126 is a wasteful number, since it uses less digits than its factorization.

20743126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10371565.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20743126 is about 4554.4622075499. The cubic root of 20743126 is about 274.7628854175.

Adding to 20743126 its reverse (62134702), we get a palindrome (82877828).

The spelling of 20743126 in words is "twenty million, seven hundred forty-three thousand, one hundred twenty-six".