1241506563 has 16 divisors (see below), whose sum is σ = 1806423552. Its totient is φ = 752180000.

The previous prime is 1241506537. The next prime is 1241506573. The reversal of 1241506563 is 3656051421.

It is not a de Polignac number, because 1241506563 - 2⁶ = 1241506499 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1241506573) 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, 170038 + ... + 177188.

It is an arithmetic number, because the mean of its divisors is an integer number (112901472).

Almost surely, 2^1241506563 is an apocalyptic number.

1241506563 is a deficient number, since it is larger than the sum of its proper divisors (564916989).

1241506563 is a wasteful number, since it uses less digits than its factorization.

1241506563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1241506563 is about 35235.0189867978. The cubic root of 1241506563 is about 1074.7719907265.

Adding to 1241506563 its reverse (3656051421), we get a palindrome (4897557984).

The spelling of 1241506563 in words is "one billion, two hundred forty-one million, five hundred six thousand, five hundred sixty-three".