1241243533 has 16 divisors (see below), whose sum is σ = 1318966720. Its totient is φ = 1164813696.

The previous prime is 1241243501. The next prime is 1241243537. The reversal of 1241243533 is 3353421421.

It is a happy number.

It is not a de Polignac number, because 1241243533 - 2⁵ = 1241243501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241243537) 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, 1414891 + ... + 1415767.

It is an arithmetic number, because the mean of its divisors is an integer number (82435420).

Almost surely, 2^1241243533 is an apocalyptic number.

It is an amenable number.

1241243533 is a deficient number, since it is larger than the sum of its proper divisors (77723187).

1241243533 is a wasteful number, since it uses less digits than its factorization.

1241243533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its digits is 8640, while the sum is 28.

The square root of 1241243533 is about 35231.2862808045. The cubic root of 1241243533 is about 1074.6960836922.

Adding to 1241243533 its reverse (3353421421), we get a palindrome (4594664954).

It can be divided in two parts, 12412 and 43533, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 1241243533 in words is "one billion, two hundred forty-one million, two hundred forty-three thousand, five hundred thirty-three".