1242040421330 has 8 divisors (see below), whose sum is σ = 2235672758412. Its totient is φ = 496816168528.

The previous prime is 1242040421311. The next prime is 1242040421371. The reversal of 1242040421330 is 331240402421.

It can be written as a sum of positive squares in 2 ways, for example, as 1174945434601 + 67094986729 = 1083949^2 + 259027^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1242040421330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62102021057 + ... + 62102021076.

Almost surely, 2^{1242040421330} is an apocalyptic number.

1242040421330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242040421330 is a deficient number, since it is larger than the sum of its proper divisors (993632337082).

1242040421330 is a wasteful number, since it uses less digits than its factorization.

1242040421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124204042140.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1242040421330 its reverse (331240402421), we get a palindrome (1573280823751).

The spelling of 1242040421330 in words is "one trillion, two hundred forty-two billion, forty million, four hundred twenty-one thousand, three hundred thirty".