130140021 has 8 divisors (see below), whose sum is σ = 189294624. Its totient is φ = 78872720.

The previous prime is 130140011. The next prime is 130140047. The reversal of 130140021 is 120041031.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 130140021 - 2²⁵ = 96585589 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130139979 and 130140006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130140011) 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, 1971786 + ... + 1971851.

It is an arithmetic number, because the mean of its divisors is an integer number (23661828).

Almost surely, 2^130140021 is an apocalyptic number.

130140021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130140021 is a deficient number, since it is larger than the sum of its proper divisors (59154603).

130140021 is a wasteful number, since it uses less digits than its factorization.

130140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943651.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 130140021 is about 11407.8929255143. The cubic root of 130140021 is about 506.7615130515.

Adding to 130140021 its reverse (120041031), we get a palindrome (250181052).

The spelling of 130140021 in words is "one hundred thirty million, one hundred forty thousand, twenty-one".