1243121010424 has 16 divisors (see below), whose sum is σ = 2330971895520. Its totient is φ = 621528504960.

The previous prime is 1243121010371. The next prime is 1243121010427. The reversal of 1243121010424 is 4240101213421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243121010427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834529 + ... + 4146064.

It is an arithmetic number, because the mean of its divisors is an integer number (145685743470).

Almost surely, 2^{1243121010424} is an apocalyptic number.

It is an amenable number.

1243121010424 is a deficient number, since it is larger than the sum of its proper divisors (1087850885096).

1243121010424 is a wasteful number, since it uses less digits than its factorization.

1243121010424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000070 (or 8000066 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1243121010424 its reverse (4240101213421), we get a palindrome (5483222223845).

The spelling of 1243121010424 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, ten thousand, four hundred twenty-four".