1234130521 has 16 divisors (see below), whose sum is σ = 1411579008. Its totient is φ = 1068883200.

The previous prime is 1234130509. The next prime is 1234130531. The reversal of 1234130521 is 1250314321.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234130521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1234130492 and 1234130501.

It is not an unprimeable number, because it can be changed into a prime (1234130531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64716 + ... + 81586.

It is an arithmetic number, because the mean of its divisors is an integer number (88223688).

Almost surely, 2^1234130521 is an apocalyptic number.

It is an amenable number.

1234130521 is a deficient number, since it is larger than the sum of its proper divisors (177448487).

1234130521 is a wasteful number, since it uses less digits than its factorization.

1234130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17232.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1234130521 is about 35130.1938651070. The cubic root of 1234130521 is about 1072.6392821395.

Adding to 1234130521 its reverse (1250314321), we get a palindrome (2484444842).

The spelling of 1234130521 in words is "one billion, two hundred thirty-four million, one hundred thirty thousand, five hundred twenty-one".