1242544241015 has 48 divisors (see below), whose sum is σ = 1892447971200. Its totient is φ = 774459766080.

The previous prime is 1242544241009. The next prime is 1242544241027. The reversal of 1242544241015 is 5101424452421.

It is a happy number.

It is not a de Polignac number, because 1242544241015 - 2⁴ = 1242544240999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20783636 + ... + 20843334.

It is an arithmetic number, because the mean of its divisors is an integer number (39425999400).

Almost surely, 2^{1242544241015} is an apocalyptic number.

1242544241015 is a deficient number, since it is larger than the sum of its proper divisors (649903730185).

1242544241015 is a wasteful number, since it uses less digits than its factorization.

1242544241015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67452 (or 67445 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 1242544241015 its reverse (5101424452421), we get a palindrome (6343968693436).

The spelling of 1242544241015 in words is "one trillion, two hundred forty-two billion, five hundred forty-four million, two hundred forty-one thousand, fifteen".