1320420004 has 6 divisors (see below), whose sum is σ = 2310735014. Its totient is φ = 660210000.

The previous prime is 1320419993. The next prime is 1320420007. The reversal of 1320420004 is 4000240231.

It can be written as a sum of positive squares in only one way, i.e., 1313917504 + 6502500 = 36248^2 + 2550^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1320420004.

It is not an unprimeable number, because it can be changed into a prime (1320420007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165052497 + ... + 165052504.

Almost surely, 2^1320420004 is an apocalyptic number.

It is an amenable number.

1320420004 is a deficient number, since it is larger than the sum of its proper divisors (990315010).

1320420004 is a wasteful number, since it uses less digits than its factorization.

1320420004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330105005 (or 330105003 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1320420004 is about 36337.5839042719. The cubic root of 1320420004 is about 1097.0776436384.

Adding to 1320420004 its reverse (4000240231), we get a palindrome (5320660235).

The spelling of 1320420004 in words is "one billion, three hundred twenty million, four hundred twenty thousand, four".