100421406043 has 4 divisors (see below), whose sum is σ = 114767321200. Its totient is φ = 86075490888.

The previous prime is 100421405989. The next prime is 100421406053. The reversal of 100421406043 is 340604124001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340604124001 = 367771 ⋅926131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100421406043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100421405999 and 100421406017.

It is not an unprimeable number, because it can be changed into a prime (100421406053) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7172957568 + ... + 7172957581.

It is an arithmetic number, because the mean of its divisors is an integer number (28691830300).

Almost surely, 2^100421406043 is an apocalyptic number.

100421406043 is a deficient number, since it is larger than the sum of its proper divisors (14345915157).

100421406043 is an equidigital number, since it uses as much as digits as its factorization.

100421406043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345915156.

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 100421406043 in words is "one hundred billion, four hundred twenty-one million, four hundred six thousand, forty-three".