21030141423 has 4 divisors (see below), whose sum is σ = 28040188568. Its totient is φ = 14020094280.

The previous prime is 21030141421. The next prime is 21030141427. The reversal of 21030141423 is 32414103012.

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

It is not a de Polignac number, because 21030141423 - 2¹ = 21030141421 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 21030141423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030141421) 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, 3505023568 + ... + 3505023573.

It is an arithmetic number, because the mean of its divisors is an integer number (7010047142).

Almost surely, 2^21030141423 is an apocalyptic number.

21030141423 is a deficient number, since it is larger than the sum of its proper divisors (7010047145).

21030141423 is an equidigital number, since it uses as much as digits as its factorization.

21030141423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010047144.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21030141423 its reverse (32414103012), we get a palindrome (53444244435).

The spelling of 21030141423 in words is "twenty-one billion, thirty million, one hundred forty-one thousand, four hundred twenty-three".