1520734241 has 4 divisors (see below), whose sum is σ = 1637713812. Its totient is φ = 1403754672.

The previous prime is 1520734213. The next prime is 1520734253. The reversal of 1520734241 is 1424370251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1424370251 = 373 ⋅3818687.

It can be written as a sum of positive squares in 2 ways, for example, as 219040000 + 1301694241 = 14800^2 + 36079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520734241 - 2³⁰ = 446992417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520734291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58489766 + ... + 58489791.

It is an arithmetic number, because the mean of its divisors is an integer number (409428453).

Almost surely, 2^1520734241 is an apocalyptic number.

It is an amenable number.

1520734241 is a deficient number, since it is larger than the sum of its proper divisors (116979571).

1520734241 is a wasteful number, since it uses less digits than its factorization.

1520734241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116979570.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1520734241 is about 38996.5926844898. The cubic root of 1520734241 is about 1149.9645208966.

The spelling of 1520734241 in words is "one billion, five hundred twenty million, seven hundred thirty-four thousand, two hundred forty-one".