2142421223 has 4 divisors (see below), whose sum is σ = 2142670248. Its totient is φ = 2142172200.

The previous prime is 2142421201. The next prime is 2142421241. The reversal of 2142421223 is 3221242412.

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 2142421223 - 2⁸ = 2142420967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142421283) 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, 111128 + ... + 128973.

It is an arithmetic number, because the mean of its divisors is an integer number (535667562).

Almost surely, 2^2142421223 is an apocalyptic number.

2142421223 is a deficient number, since it is larger than the sum of its proper divisors (249025).

2142421223 is an equidigital number, since it uses as much as digits as its factorization.

2142421223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249024.

The product of its digits is 1536, while the sum is 23.

The square root of 2142421223 is about 46286.2962765439. The cubic root of 2142421223 is about 1289.1445609545.

Adding to 2142421223 its reverse (3221242412), we get a palindrome (5363663635).

The spelling of 2142421223 in words is "two billion, one hundred forty-two million, four hundred twenty-one thousand, two hundred twenty-three".