1240002002 has 4 divisors (see below), whose sum is σ = 1860003006. Its totient is φ = 620001000.

The previous prime is 1240001993. The next prime is 1240002041. The reversal of 1240002002 is 2002000421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002000421 = 83 ⋅24120487.

It can be written as a sum of positive squares in only one way, i.e., 1234889881 + 5112121 = 35141^2 + 2261^2 .

1240002002 is a modest number, since divided by 2002 gives 1240 as remainder.

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, 310000499 + ... + 310000502.

Almost surely, 2^1240002002 is an apocalyptic number.

1240002002 is a deficient number, since it is larger than the sum of its proper divisors (620001004).

1240002002 is an equidigital number, since it uses as much as digits as its factorization.

1240002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620001003.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1240002002 is about 35213.6621497963. The cubic root of 1240002002 is about 1074.3376491668.

Adding to 1240002002 its reverse (2002000421), we get a palindrome (3242002423).

The spelling of 1240002002 in words is "one billion, two hundred forty million, two thousand, two".