402404001002100 has 54 divisors (see below), whose sum is σ = 1261312985366070. Its totient is φ = 107307733600320.

The previous prime is 402404001002051. The next prime is 402404001002299. The reversal of 402404001002100 is 1200100404204.

402404001002100 is a `hidden beast` number, since 4 + 0 + 2 + 40 + 400 + 10 + 0 + 210 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 137834127517284 + 264569873484816 = 11740278^2 + 16265604^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 223557777435 + ... + 223557779234.

Almost surely, 2^{402404001002100} is an apocalyptic number.

It is an amenable number.

402404001002100 is an abundant number, since it is smaller than the sum of its proper divisors (858908984363970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402404001002100 is a wasteful number, since it uses less digits than its factorization.

402404001002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447115556689 (or 447115556679 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 402404001002100 its reverse (1200100404204), we get a palindrome (403604101406304).

The spelling of 402404001002100 in words is "four hundred two trillion, four hundred four billion, one million, two thousand, one hundred".