1296072002 has 16 divisors (see below), whose sum is σ = 2044121400. Its totient is φ = 615431040.

The previous prime is 1296071989. The next prime is 1296072013. The reversal of 1296072002 is 2002706921.

It is a Cunningham number, because it is equal to 36001²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 907154161 + 388917841 = 30119^2 + 19721^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179627 + ... + 186702.

Almost surely, 2^1296072002 is an apocalyptic number.

1296072002 is a deficient number, since it is larger than the sum of its proper divisors (748049398).

1296072002 is a wasteful number, since it uses less digits than its factorization.

1296072002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366421.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1296072002 is about 36001.0000138885. Note that the first 4 decimals coincide. The cubic root of 1296072002 is about 1090.2925461150.

Adding to 1296072002 its reverse (2002706921), we get a palindrome (3298778923).

The spelling of 1296072002 in words is "one billion, two hundred ninety-six million, seventy-two thousand, two".