402121100403 has 16 divisors (see below), whose sum is σ = 649892688000. Its totient is φ = 243709757640.

The previous prime is 402121100399. The next prime is 402121100453. The reversal of 402121100403 is 304001121204.

402121100403 is a `hidden beast` number, since 40 + 2 + 121 + 100 + 403 = 666.

It is not a de Polignac number, because 402121100403 - 2² = 402121100399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402121100453) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 676971253 + ... + 676971846.

It is an arithmetic number, because the mean of its divisors is an integer number (40618293000).

Almost surely, 2^402121100403 is an apocalyptic number.

402121100403 is a deficient number, since it is larger than the sum of its proper divisors (247771587597).

402121100403 is a wasteful number, since it uses less digits than its factorization.

402121100403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353943119 (or 1353943113 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 402121100403 its reverse (304001121204), we get a palindrome (706122221607).

The spelling of 402121100403 in words is "four hundred two billion, one hundred twenty-one million, one hundred thousand, four hundred three".