100421142043 has 4 divisors (see below), whose sum is σ = 100433064240. Its totient is φ = 100409219848.

The previous prime is 100421142011. The next prime is 100421142061. The reversal of 100421142043 is 340241124001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100421142043 - 2⁵ = 100421142011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100421142083) 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, 5948455 + ... + 5965312.

It is an arithmetic number, because the mean of its divisors is an integer number (25108266060).

Almost surely, 2^100421142043 is an apocalyptic number.

100421142043 is a deficient number, since it is larger than the sum of its proper divisors (11922197).

100421142043 is an equidigital number, since it uses as much as digits as its factorization.

100421142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11922196.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 100421142043 its reverse (340241124001), we get a palindrome (440662266044).

The spelling of 100421142043 in words is "one hundred billion, four hundred twenty-one million, one hundred forty-two thousand, forty-three".