1242102424 has 8 divisors (see below), whose sum is σ = 2328942060. Its totient is φ = 621051208.

The previous prime is 1242102391. The next prime is 1242102427. The reversal of 1242102424 is 4242012421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1242102395 and 1242102404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242102427) 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 as a sum of consecutive naturals, namely, 77631394 + ... + 77631409.

Almost surely, 2^1242102424 is an apocalyptic number.

It is an amenable number.

1242102424 is a deficient number, since it is larger than the sum of its proper divisors (1086839636).

1242102424 is a wasteful number, since it uses less digits than its factorization.

1242102424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155262809 (or 155262805 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1242102424 is about 35243.4734951026. The cubic root of 1242102424 is about 1074.9439088094.

Adding to 1242102424 its reverse (4242012421), we get a palindrome (5484114845).

The spelling of 1242102424 in words is "one billion, two hundred forty-two million, one hundred two thousand, four hundred twenty-four".