2144402040 has 128 divisors (see below), whose sum is σ = 7065792000. Its totient is φ = 516318720.

The previous prime is 2144402021. The next prime is 2144402047. The reversal of 2144402040 is 402044412.

It is a junction number, because it is equal to n+sod(n) for n = 2144401998 and 2144402016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144402047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191229 + ... + 202131.

It is an arithmetic number, because the mean of its divisors is an integer number (55201500).

Almost surely, 2^2144402040 is an apocalyptic number.

2144402040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532896000).

2144402040 is an abundant number, since it is smaller than the sum of its proper divisors (4921389960).

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

2144402040 is a wasteful number, since it uses less digits than its factorization.

2144402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077 (or 11073 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2144402040 is about 46307.6887784307. The cubic root of 2144402040 is about 1289.5417397566.

Adding to 2144402040 its reverse (402044412), we get a palindrome (2546446452).

The spelling of 2144402040 in words is "two billion, one hundred forty-four million, four hundred two thousand, forty".