2144005240 has 32 divisors (see below), whose sum is σ = 5195090880. Its totient is φ = 791632512.

The previous prime is 2144005153. The next prime is 2144005243. The reversal of 2144005240 is 425004412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144005243) 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, 2061024 + ... + 2062063.

It is an arithmetic number, because the mean of its divisors is an integer number (162346590).

Almost surely, 2^2144005240 is an apocalyptic number.

2144005240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144005240 is an abundant number, since it is smaller than the sum of its proper divisors (3051085640).

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

2144005240 is a wasteful number, since it uses less digits than its factorization.

2144005240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123111 (or 4123107 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2144005240 is about 46303.4041945082. The cubic root of 2144005240 is about 1289.4621959464.

Adding to 2144005240 its reverse (425004412), we get a palindrome (2569009652).

The spelling of 2144005240 in words is "two billion, one hundred forty-four million, five thousand, two hundred forty".