133531534402642 has 16 divisors (see below), whose sum is σ = 201816694042200. Its totient is φ = 66259580197248.

The previous prime is 133531534402619. The next prime is 133531534402667. The reversal of 133531534402642 is 246204435135331.

It can be written as a sum of positive squares in 4 ways, for example, as 129733444023481 + 3798090379161 = 11390059^2 + 1948869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133531534402592 and 133531534402601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68320017 + ... + 70247332.

Almost surely, 2^{133531534402642} is an apocalyptic number.

133531534402642 is a deficient number, since it is larger than the sum of its proper divisors (68285159639558).

133531534402642 is a wasteful number, since it uses less digits than its factorization.

133531534402642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138571005.

The product of its (nonzero) digits is 3110400, while the sum is 46.

Adding to 133531534402642 its reverse (246204435135331), we get a palindrome (379735969537973).

The spelling of 133531534402642 in words is "one hundred thirty-three trillion, five hundred thirty-one billion, five hundred thirty-four million, four hundred two thousand, six hundred forty-two".