20126130 has 128 divisors (see below), whose sum is σ = 56401920. Its totient is φ = 4561920.

The previous prime is 20126129. The next prime is 20126131. The reversal of 20126130 is 3162102.

It is an interprime number because it is at equal distance from previous prime (20126129) and next prime (20126131).

It is a super-2 number, since 2×20126130² = 810122217553800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20126131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 300357 + ... + 300423.

It is an arithmetic number, because the mean of its divisors is an integer number (440640).

Almost surely, 2^20126130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20126130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28200960).

20126130 is an abundant number, since it is smaller than the sum of its proper divisors (36275790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20126130 is a wasteful number, since it uses less digits than its factorization.

20126130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20126130 is about 4486.2155543398. The cubic root of 20126130 is about 272.0111821383.

Adding to 20126130 its reverse (3162102), we get a palindrome (23288232).

The spelling of 20126130 in words is "twenty million, one hundred twenty-six thousand, one hundred thirty".