1440245052 has 36 divisors (see below), whose sum is σ = 3676674456. Its totient is φ = 475327200.

The previous prime is 1440245029. The next prime is 1440245057. The reversal of 1440245052 is 2505420441.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440245057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194418 + ... + 201689.

It is an arithmetic number, because the mean of its divisors is an integer number (102129846).

Almost surely, 2^1440245052 is an apocalyptic number.

1440245052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440245052 is an abundant number, since it is smaller than the sum of its proper divisors (2236429404).

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

1440245052 is a wasteful number, since it uses less digits than its factorization.

1440245052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396218 (or 396213 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1440245052 is about 37950.5606282700. The cubic root of 1440245052 is about 1129.3072873465.

Adding to 1440245052 its reverse (2505420441), we get a palindrome (3945665493).

The spelling of 1440245052 in words is "one billion, four hundred forty million, two hundred forty-five thousand, fifty-two".