1521525431042 has 8 divisors (see below), whose sum is σ = 2305816890636. Its totient is φ = 752919800832.

The previous prime is 1521525431029. The next prime is 1521525431123. The reversal of 1521525431042 is 2401345251251.

It can be written as a sum of positive squares in 2 ways, for example, as 1420337184841 + 101188246201 = 1191779^2 + 318101^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1521525430993 and 1521525431011.

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, 3921457103 + ... + 3921457490.

Almost surely, 2^{1521525431042} is an apocalyptic number.

1521525431042 is a deficient number, since it is larger than the sum of its proper divisors (784291459594).

1521525431042 is an equidigital number, since it uses as much as digits as its factorization.

1521525431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842914692.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 1521525431042 in words is "one trillion, five hundred twenty-one billion, five hundred twenty-five million, four hundred thirty-one thousand, forty-two".