20120130 has 64 divisors (see below), whose sum is σ = 54933120. Its totient is φ = 5237568.

The previous prime is 20120081. The next prime is 20120143. The reversal of 20120130 is 3102102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10744 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (858330).

Almost surely, 2^20120130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27466560).

20120130 is an abundant number, since it is smaller than the sum of its proper divisors (34812990).

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

20120130 is a wasteful number, since it uses less digits than its factorization.

20120130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20120130 is about 4485.5467894115. The cubic root of 20120130 is about 271.9841488023.

Adding to 20120130 its reverse (3102102), we get a palindrome (23222232).

The spelling of 20120130 in words is "twenty million, one hundred twenty thousand, one hundred thirty".