2143230454 has 4 divisors (see below), whose sum is σ = 3214845684. Its totient is φ = 1071615226.

The previous prime is 2143230391. The next prime is 2143230487. The reversal of 2143230454 is 4540323412.

It is a happy number.

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

It is a super-2 number, since 2×2143230454² = 9186873557906092232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535807612 + ... + 535807615.

It is an arithmetic number, because the mean of its divisors is an integer number (803711421).

Almost surely, 2^2143230454 is an apocalyptic number.

2143230454 is a deficient number, since it is larger than the sum of its proper divisors (1071615230).

2143230454 is a wasteful number, since it uses less digits than its factorization.

2143230454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071615229.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2143230454 is about 46295.0370342221. The cubic root of 2143230454 is about 1289.3068515460.

Adding to 2143230454 its reverse (4540323412), we get a palindrome (6683553866).

The spelling of 2143230454 in words is "two billion, one hundred forty-three million, two hundred thirty thousand, four hundred fifty-four".