130019421 has 32 divisors (see below), whose sum is σ = 203673600. Its totient is φ = 72244800.

The previous prime is 130019419. The next prime is 130019423. The reversal of 130019421 is 124910031.

It is an interprime number because it is at equal distance from previous prime (130019419) and next prime (130019423).

It is not a de Polignac number, because 130019421 - 2¹ = 130019419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130019423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124620 + ... + 125658.

It is an arithmetic number, because the mean of its divisors is an integer number (6364800).

Almost surely, 2^130019421 is an apocalyptic number.

It is an amenable number.

130019421 is a deficient number, since it is larger than the sum of its proper divisors (73654179).

130019421 is a wasteful number, since it uses less digits than its factorization.

130019421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 130019421 is about 11402.6058863753. The cubic root of 130019421 is about 506.6049270242.

Adding to 130019421 its reverse (124910031), we get a palindrome (254929452).

It can be divided in two parts, 13001 and 9421, that added together give a palindrome (22422).

The spelling of 130019421 in words is "one hundred thirty million, nineteen thousand, four hundred twenty-one".