1242120002 has 8 divisors (see below), whose sum is σ = 1886764800. Its totient is φ = 613198404.

The previous prime is 1242120001. The next prime is 1242120023. The reversal of 1242120002 is 2000212421.

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

It is not an unprimeable number, because it can be changed into a prime (1242120001) 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 3 ways as a sum of consecutive naturals, for example, 3930602 + ... + 3930917.

It is an arithmetic number, because the mean of its divisors is an integer number (235845600).

Almost surely, 2^1242120002 is an apocalyptic number.

1242120002 is a deficient number, since it is larger than the sum of its proper divisors (644644798).

1242120002 is an equidigital number, since it uses as much as digits as its factorization.

1242120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861600.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1242120002 is about 35243.7228737260. The cubic root of 1242120002 is about 1074.9489795869.

Adding to 1242120002 its reverse (2000212421), we get a palindrome (3242332423).

It can be divided in two parts, 12421 and 20002, that multiplied together give a palindrome (248444842).

The spelling of 1242120002 in words is "one billion, two hundred forty-two million, one hundred twenty thousand, two".