1020403405192 has 8 divisors (see below), whose sum is σ = 1913256384750. Its totient is φ = 510201702592.

The previous prime is 1020403405181. The next prime is 1020403405243. The reversal of 1020403405192 is 2915043040201.

It can be written as a sum of positive squares in only one way, i.e., 968307168676 + 52096236516 = 984026^2 + 228246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 63775212817 + ... + 63775212832.

Almost surely, 2^{1020403405192} is an apocalyptic number.

It is an amenable number.

1020403405192 is a deficient number, since it is larger than the sum of its proper divisors (892852979558).

1020403405192 is a wasteful number, since it uses less digits than its factorization.

1020403405192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127550425655 (or 127550425651 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 1020403405192 its reverse (2915043040201), we get a palindrome (3935446445393).

The spelling of 1020403405192 in words is "one trillion, twenty billion, four hundred three million, four hundred five thousand, one hundred ninety-two".