100423041213421 has 4 divisors (see below), whose sum is σ = 105708464435200. Its totient is φ = 95137617991644.

The previous prime is 100423041213409. The next prime is 100423041213427. The reversal of 100423041213421 is 124312140324001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100423041213421 - 2¹³ = 100423041205229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100423041213421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100423041213427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642711610861 + ... + 2642711610898.

It is an arithmetic number, because the mean of its divisors is an integer number (26427116108800).

Almost surely, 2^{100423041213421} is an apocalyptic number.

It is an amenable number.

100423041213421 is a deficient number, since it is larger than the sum of its proper divisors (5285423221779).

100423041213421 is an equidigital number, since it uses as much as digits as its factorization.

100423041213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285423221778.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 100423041213421 its reverse (124312140324001), we get a palindrome (224735181537422).

The spelling of 100423041213421 in words is "one hundred trillion, four hundred twenty-three billion, forty-one million, two hundred thirteen thousand, four hundred twenty-one".