1521136331042 has 8 divisors (see below), whose sum is σ = 2293526800236. Its totient is φ = 756627397632.

The previous prime is 1521136331009. The next prime is 1521136331131. The reversal of 1521136331042 is 2401336311251.

It can be written as a sum of positive squares in 2 ways, for example, as 1456894866361 + 64241464681 = 1207019^2 + 253459^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970383463 + ... + 1970384234.

Almost surely, 2^{1521136331042} is an apocalyptic number.

1521136331042 is a deficient number, since it is larger than the sum of its proper divisors (772390469194).

1521136331042 is a wasteful number, since it uses less digits than its factorization.

1521136331042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940767892.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 1521136331042 in words is "one trillion, five hundred twenty-one billion, one hundred thirty-six million, three hundred thirty-one thousand, forty-two".