2154230420 has 48 divisors (see below), whose sum is σ = 4614624000. Its totient is φ = 844498560.

The previous prime is 2154230413. The next prime is 2154230437. The reversal of 2154230420 is 240324512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409205 + ... + 414435.

It is an arithmetic number, because the mean of its divisors is an integer number (96138000).

Almost surely, 2^2154230420 is an apocalyptic number.

2154230420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154230420 is an abundant number, since it is smaller than the sum of its proper divisors (2460393580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154230420 is a wasteful number, since it uses less digits than its factorization.

2154230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648 (or 5646 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2154230420 is about 46413.6878517534. The cubic root of 2154230420 is about 1291.5088448358.

Adding to 2154230420 its reverse (240324512), we get a palindrome (2394554932).

The spelling of 2154230420 in words is "two billion, one hundred fifty-four million, two hundred thirty thousand, four hundred twenty".