130234421 has 4 divisors (see below), whose sum is σ = 131387052. Its totient is φ = 129081792.

The previous prime is 130234393. The next prime is 130234457. The reversal of 130234421 is 124432031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64802500 + 65431921 = 8050^2 + 8089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130234421 is a prime.

It is a super-2 number, since 2×130234421² = 33922008826410482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130234393 and 130234402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130234471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576146 + ... + 576371.

It is an arithmetic number, because the mean of its divisors is an integer number (32846763).

Almost surely, 2^130234421 is an apocalyptic number.

It is an amenable number.

130234421 is a deficient number, since it is larger than the sum of its proper divisors (1152631).

130234421 is a wasteful number, since it uses less digits than its factorization.

130234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152630.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 130234421 is about 11412.0296617210. The cubic root of 130234421 is about 506.8840137352.

Adding to 130234421 its reverse (124432031), we get a palindrome (254666452).

The spelling of 130234421 in words is "one hundred thirty million, two hundred thirty-four thousand, four hundred twenty-one".