20126061 has 12 divisors (see below), whose sum is σ = 29620188. Its totient is φ = 13163904.

The previous prime is 20126053. The next prime is 20126069. The reversal of 20126061 is 16062102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20126053) and next prime (20126069).

It can be written as a sum of positive squares in 2 ways, for example, as 12916836 + 7209225 = 3594^2 + 2685^2 .

It is not a de Polignac number, because 20126061 - 2³ = 20126053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126069) 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 11 ways as a sum of consecutive naturals, for example, 20620 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (2468349).

Almost surely, 2^20126061 is an apocalyptic number.

It is an amenable number.

20126061 is a deficient number, since it is larger than the sum of its proper divisors (9494127).

20126061 is a wasteful number, since it uses less digits than its factorization.

20126061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42252 (or 42249 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20126061 is about 4486.2078641097. The cubic root of 20126061 is about 272.0108712855.

Adding to 20126061 its reverse (16062102), we get a palindrome (36188163).

It can be divided in two parts, 201 and 26061, that added together give a palindrome (26262).

The spelling of 20126061 in words is "twenty million, one hundred twenty-six thousand, sixty-one".