1500220243 has 4 divisors (see below), whose sum is σ = 1500504120. Its totient is φ = 1499936368.

The previous prime is 1500220229. The next prime is 1500220261. The reversal of 1500220243 is 3420220051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420220051 = 1193 ⋅2866907.

It is a cyclic number.

It is not a de Polignac number, because 1500220243 - 2⁹ = 1500219731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1500220243.

It is not an unprimeable number, because it can be changed into a prime (1500226243) 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 3 ways as a sum of consecutive naturals, for example, 133858 + ... + 144631.

It is an arithmetic number, because the mean of its divisors is an integer number (375126030).

Almost surely, 2^1500220243 is an apocalyptic number.

1500220243 is a deficient number, since it is larger than the sum of its proper divisors (283877).

1500220243 is an equidigital number, since it uses as much as digits as its factorization.

1500220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283876.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1500220243 is about 38732.6766826152. The cubic root of 1500220243 is about 1144.7702654335.

Adding to 1500220243 its reverse (3420220051), we get a palindrome (4920440294).

It can be divided in two parts, 15002 and 20243, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 1500220243 in words is "one billion, five hundred million, two hundred twenty thousand, two hundred forty-three".