1440541020 has 24 divisors (see below), whose sum is σ = 4033515024. Its totient is φ = 384144256.

The previous prime is 1440540977. The next prime is 1440541079. The reversal of 1440541020 is 201450441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12004449 + ... + 12004568.

It is an arithmetic number, because the mean of its divisors is an integer number (168063126).

Almost surely, 2^1440541020 is an apocalyptic number.

1440541020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440541020 is an abundant number, since it is smaller than the sum of its proper divisors (2592974004).

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

1440541020 is a wasteful number, since it uses less digits than its factorization.

1440541020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24009029 (or 24009027 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1440541020 is about 37954.4598169965. The cubic root of 1440541020 is about 1129.3846389810.

Adding to 1440541020 its reverse (201450441), we get a palindrome (1641991461).

The spelling of 1440541020 in words is "one billion, four hundred forty million, five hundred forty-one thousand, twenty".