100000400002 has 8 divisors (see below), whose sum is σ = 150002233596. Its totient is φ = 49999655472.

The previous prime is 100000399997. The next prime is 100000400009. The reversal of 100000400002 is 200004000001.

It can be written as a sum of positive squares in 2 ways, for example, as 90000600001 + 9999800001 = 300001^2 + 99999^2 .

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

It is not an unprimeable number, because it can be changed into a prime (100000400009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20068 + ... + 447664.

Almost surely, 2^100000400002 is an apocalyptic number.

100000400002 is a deficient number, since it is larger than the sum of its proper divisors (50001833594).

100000400002 is a wasteful number, since it uses less digits than its factorization.

100000400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544532.

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

Adding to 100000400002 its reverse (200004000001), we get a palindrome (300004400003).

The spelling of 100000400002 in words is "one hundred billion, four hundred thousand, two".