130620021 has 8 divisors (see below), whose sum is σ = 199040064. Its totient is φ = 74640000.

The previous prime is 130619999. The next prime is 130620023. The reversal of 130620021 is 120026031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130620021 - 2⁵ = 130619989 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 (130620023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109980 + ... + 3110021.

It is an arithmetic number, because the mean of its divisors is an integer number (24880008).

Almost surely, 2^130620021 is an apocalyptic number.

It is an amenable number.

130620021 is a deficient number, since it is larger than the sum of its proper divisors (68420043).

130620021 is an equidigital number, since it uses as much as digits as its factorization.

130620021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220011.

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

The square root of 130620021 is about 11428.9116279723. The cubic root of 130620021 is about 507.3837840452.

Adding to 130620021 its reverse (120026031), we get a palindrome (250646052).

The spelling of 130620021 in words is "one hundred thirty million, six hundred twenty thousand, twenty-one".