1320105802 has 4 divisors (see below), whose sum is σ = 1980158706. Its totient is φ = 660052900.

The previous prime is 1320105763. The next prime is 1320105851. The reversal of 1320105802 is 2085010231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2085010231 = 27077 ⋅77003.

It can be written as a sum of positive squares in only one way, i.e., 1269425641 + 50680161 = 35629^2 + 7119^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330026449 + ... + 330026452.

Almost surely, 2^1320105802 is an apocalyptic number.

1320105802 is a deficient number, since it is larger than the sum of its proper divisors (660052904).

1320105802 is an equidigital number, since it uses as much as digits as its factorization.

1320105802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660052903.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1320105802 is about 36333.2602720978. The cubic root of 1320105802 is about 1096.9906179612.

The spelling of 1320105802 in words is "one billion, three hundred twenty million, one hundred five thousand, eight hundred two".