1242411121 has 12 divisors (see below), whose sum is σ = 1521320880. Its totient is φ = 1008874440.

The previous prime is 1242411109. The next prime is 1242411139. The reversal of 1242411121 is 1211142421.

It is a happy number.

It is not a de Polignac number, because 1242411121 - 2⁵ = 1242411089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1242411161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 666315 + ... + 668176.

It is an arithmetic number, because the mean of its divisors is an integer number (126776740).

Almost surely, 2^1242411121 is an apocalyptic number.

It is an amenable number.

1242411121 is a deficient number, since it is larger than the sum of its proper divisors (278909759).

1242411121 is a wasteful number, since it uses less digits than its factorization.

1242411121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334524 (or 1334517 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 1242411121 is about 35247.8527147399. The cubic root of 1242411121 is about 1075.0329525864.

Adding to 1242411121 its reverse (1211142421), we get a palindrome (2453553542).

The spelling of 1242411121 in words is "one billion, two hundred forty-two million, four hundred eleven thousand, one hundred twenty-one".