401006002 has 4 divisors (see below), whose sum is σ = 601509006. Its totient is φ = 200503000.

The previous prime is 401005999. The next prime is 401006029. The reversal of 401006002 is 200600104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 359519521 + 41486481 = 18961^2 + 6441^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100251499 + ... + 100251502.

Almost surely, 2^401006002 is an apocalyptic number.

401006002 is a deficient number, since it is larger than the sum of its proper divisors (200503004).

401006002 is a wasteful number, since it uses less digits than its factorization.

401006002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200503003.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 401006002 is about 20025.1342567285. The cubic root of 401006002 is about 737.4234731281.

Adding to 401006002 its reverse (200600104), we get a palindrome (601606106).

The spelling of 401006002 in words is "four hundred one million, six thousand, two".