1200020002 has 8 divisors (see below), whose sum is σ = 1801680156. Its totient is φ = 599459952.

The previous prime is 1200019979. The next prime is 1200020023. The reversal of 1200020002 is 2000200021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 830650041 + 369369961 = 28821^2 + 19219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

1200020002 is a modest number, since divided by 20002 gives 12 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272293 + ... + 276664.

Almost surely, 2^1200020002 is an apocalyptic number.

1200020002 is a deficient number, since it is larger than the sum of its proper divisors (601660154).

1200020002 is a wasteful number, since it uses less digits than its factorization.

1200020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550052.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1200020002 is about 34641.3048541766. The cubic root of 1200020002 is about 1062.6644733989.

Adding to 1200020002 its reverse (2000200021), we get a palindrome (3200220023).

The spelling of 1200020002 in words is "one billion, two hundred million, twenty thousand, two".