1455120243 has 24 divisors (see below), whose sum is σ = 2141865440. Its totient is φ = 951782400.

The previous prime is 1455120239. The next prime is 1455120257. The reversal of 1455120243 is 3420215541.

1455120243 is a `hidden beast` number, since 1 + 455 + 1 + 202 + 4 + 3 = 666.

It is not a de Polignac number, because 1455120243 - 2² = 1455120239 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1455120203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93843 + ... + 108243.

Almost surely, 2^1455120243 is an apocalyptic number.

1455120243 is a deficient number, since it is larger than the sum of its proper divisors (686745197).

1455120243 is a wasteful number, since it uses less digits than its factorization.

1455120243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14619 (or 14616 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1455120243 is about 38146.0383657333. The cubic root of 1455120243 is about 1133.1818959614.

Adding to 1455120243 its reverse (3420215541), we get a palindrome (4875335784).

The spelling of 1455120243 in words is "one billion, four hundred fifty-five million, one hundred twenty thousand, two hundred forty-three".