1520234243 has 24 divisors (see below), whose sum is σ = 1748687616. Its totient is φ = 1308212400.

The previous prime is 1520234189. The next prime is 1520234257. The reversal of 1520234243 is 3424320251.

It is not a de Polignac number, because 1520234243 - 2¹⁴ = 1520217859 is a prime.

It is a super-2 number, since 2×1520234243² = 4622224307179566098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520234263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4888058 + ... + 4888368.

It is an arithmetic number, because the mean of its divisors is an integer number (72861984).

Almost surely, 2^1520234243 is an apocalyptic number.

1520234243 is a deficient number, since it is larger than the sum of its proper divisors (228453373).

1520234243 is a wasteful number, since it uses less digits than its factorization.

1520234243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1520234243 is about 38990.1813665954. The cubic root of 1520234243 is about 1149.8384758648.

Adding to 1520234243 its reverse (3424320251), we get a palindrome (4944554494).

The spelling of 1520234243 in words is "one billion, five hundred twenty million, two hundred thirty-four thousand, two hundred forty-three".