1243241015 has 8 divisors (see below), whose sum is σ = 1496750640. Its totient is φ = 991351872.

The previous prime is 1243241009. The next prime is 1243241047. The reversal of 1243241015 is 5101423421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243241015 - 2¹⁸ = 1242978871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403430 + ... + 406499.

It is an arithmetic number, because the mean of its divisors is an integer number (187093830).

Almost surely, 2^1243241015 is an apocalyptic number.

1243241015 is a deficient number, since it is larger than the sum of its proper divisors (253509625).

1243241015 is an equidigital number, since it uses as much as digits as its factorization.

1243241015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810241.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243241015 is about 35259.6230127323. The cubic root of 1243241015 is about 1075.2722627497.

Adding to 1243241015 its reverse (5101423421), we get a palindrome (6344664436).

The spelling of 1243241015 in words is "one billion, two hundred forty-three million, two hundred forty-one thousand, fifteen".