2143615420 has 48 divisors (see below), whose sum is σ = 4586416128. Its totient is φ = 841389120.

The previous prime is 2143615367. The next prime is 2143615421. The reversal of 2143615420 is 245163412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143615421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360189 + ... + 366091.

It is an arithmetic number, because the mean of its divisors is an integer number (95550336).

Almost surely, 2^2143615420 is an apocalyptic number.

2143615420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143615420 is an abundant number, since it is smaller than the sum of its proper divisors (2442800708).

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

2143615420 is a wasteful number, since it uses less digits than its factorization.

2143615420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250 (or 6248 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2143615420 is about 46299.1945934268. The cubic root of 2143615420 is about 1289.3840418121.

Adding to 2143615420 its reverse (245163412), we get a palindrome (2388778832).

It can be divided in two parts, 21436 and 15420, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 2143615420 in words is "two billion, one hundred forty-three million, six hundred fifteen thousand, four hundred twenty".