421210100423403 has 12 divisors (see below), whose sum is σ = 608468293821960. Its totient is φ = 280781947005696.

The previous prime is 421210100423401. The next prime is 421210100423543. The reversal of 421210100423403 is 304324001012124.

421210100423403 is a `hidden beast` number, since 4 + 2 + 1 + 210 + 1 + 0 + 0 + 42 + 3 + 403 = 666.

It is not a de Polignac number, because 421210100423403 - 2¹ = 421210100423401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421210100423401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2065443201 + ... + 2065647122.

It is an arithmetic number, because the mean of its divisors is an integer number (50705691151830).

Almost surely, 2^{421210100423403} is an apocalyptic number.

421210100423403 is a deficient number, since it is larger than the sum of its proper divisors (187258193398557).

421210100423403 is a wasteful number, since it uses less digits than its factorization.

421210100423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131101658 (or 4131101655 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 421210100423403 its reverse (304324001012124), we get a palindrome (725534101435527).

The spelling of 421210100423403 in words is "four hundred twenty-one trillion, two hundred ten billion, one hundred million, four hundred twenty-three thousand, four hundred three".