1521634245242 has 8 divisors (see below), whose sum is σ = 2282476530432. Its totient is φ = 760808735100.

The previous prime is 1521634245191. The next prime is 1521634245289. The reversal of 1521634245242 is 2425424361251.

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 1521634245242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964484 + ... + 4331327.

It is an arithmetic number, because the mean of its divisors is an integer number (285309566304).

Almost surely, 2^{1521634245242} is an apocalyptic number.

1521634245242 is a deficient number, since it is larger than the sum of its proper divisors (760842285190).

1521634245242 is an equidigital number, since it uses as much as digits as its factorization.

1521634245242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8387524.

The product of its digits is 460800, while the sum is 41.

The spelling of 1521634245242 in words is "one trillion, five hundred twenty-one billion, six hundred thirty-four million, two hundred forty-five thousand, two hundred forty-two".