130021847 has 2 divisors, whose sum is σ = 130021848. Its totient is φ = 130021846.

The previous prime is 130021817. The next prime is 130021873. The reversal of 130021847 is 748120031.

It is an a-pointer prime, because the next prime (130021873) can be obtained adding 130021847 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130021847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130021817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010923 + 65010924.

It is an arithmetic number, because the mean of its divisors is an integer number (65010924).

Almost surely, 2^130021847 is an apocalyptic number.

130021847 is a deficient number, since it is larger than the sum of its proper divisors (1).

130021847 is an equidigital number, since it uses as much as digits as its factorization.

130021847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 130021847 is about 11402.7122650710. The cubic root of 130021847 is about 506.6080778763.

Adding to 130021847 its reverse (748120031), we get a palindrome (878141878).

The spelling of 130021847 in words is "one hundred thirty million, twenty-one thousand, eight hundred forty-seven".