2144154421 has 8 divisors (see below), whose sum is σ = 2161656288. Its totient is φ = 2126670000.

The previous prime is 2144154413. The next prime is 2144154431. The reversal of 2144154421 is 1244514412.

It is a happy number.

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 2144154421 - 2³ = 2144154413 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 2144154421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144154431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370611 + ... + 376351.

It is an arithmetic number, because the mean of its divisors is an integer number (270207036).

Almost surely, 2^2144154421 is an apocalyptic number.

It is an amenable number.

2144154421 is a deficient number, since it is larger than the sum of its proper divisors (17501867).

2144154421 is a wasteful number, since it uses less digits than its factorization.

2144154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8723.

The product of its digits is 5120, while the sum is 28.

The square root of 2144154421 is about 46305.0150739636. The cubic root of 2144154421 is about 1289.4921024029.

Adding to 2144154421 its reverse (1244514412), we get a palindrome (3388668833).

The spelling of 2144154421 in words is "two billion, one hundred forty-four million, one hundred fifty-four thousand, four hundred twenty-one".