2123143421 has 8 divisors (see below), whose sum is σ = 2426749824. Its totient is φ = 1819612080.

The previous prime is 2123143397. The next prime is 2123143427. The reversal of 2123143421 is 1243413212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123143421 - 2⁶ = 2123143357 is a prime.

It is a super-2 number, since 2×2123143421² = 9015475972271166482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123143427) 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 7 ways as a sum of consecutive naturals, for example, 69611 + ... + 95351.

It is an arithmetic number, because the mean of its divisors is an integer number (303343728).

Almost surely, 2^2123143421 is an apocalyptic number.

It is an amenable number.

2123143421 is a deficient number, since it is larger than the sum of its proper divisors (303606403).

2123143421 is a wasteful number, since it uses less digits than its factorization.

2123143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37531.

The product of its digits is 1152, while the sum is 23.

The square root of 2123143421 is about 46077.5804594816. The cubic root of 2123143421 is about 1285.2662715377.

Adding to 2123143421 its reverse (1243413212), we get a palindrome (3366556633).

The spelling of 2123143421 in words is "two billion, one hundred twenty-three million, one hundred forty-three thousand, four hundred twenty-one".