2154414421 has 8 divisors (see below), whose sum is σ = 2162945664. Its totient is φ = 2145897600.

The previous prime is 2154414391. The next prime is 2154414467. The reversal of 2154414421 is 1244144512.

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 2154414421 - 2¹⁹ = 2153890133 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 2154414421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154414481) 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, 368100 + ... + 373906.

It is an arithmetic number, because the mean of its divisors is an integer number (270368208).

Almost surely, 2^2154414421 is an apocalyptic number.

It is an amenable number.

2154414421 is a deficient number, since it is larger than the sum of its proper divisors (8531243).

2154414421 is a wasteful number, since it uses less digits than its factorization.

2154414421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7211.

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

The square root of 2154414421 is about 46415.6699940871. The cubic root of 2154414421 is about 1291.5456146804.

Adding to 2154414421 its reverse (1244144512), we get a palindrome (3398558933).

The spelling of 2154414421 in words is "two billion, one hundred fifty-four million, four hundred fourteen thousand, four hundred twenty-one".