1440130455 has 16 divisors (see below), whose sum is σ = 2560232160. Its totient is φ = 768069504.

The previous prime is 1440130423. The next prime is 1440130477. The reversal of 1440130455 is 5540310441.

It is a happy number.

It is not a de Polignac number, because 1440130455 - 2⁵ = 1440130423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5333682 + ... + 5333951.

It is an arithmetic number, because the mean of its divisors is an integer number (160014510).

Almost surely, 2^1440130455 is an apocalyptic number.

1440130455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1440130455 is a deficient number, since it is larger than the sum of its proper divisors (1120101705).

1440130455 is a wasteful number, since it uses less digits than its factorization.

1440130455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10667647 (or 10667641 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1440130455 is about 37949.0507786427. The cubic root of 1440130455 is about 1129.2773344206.

Adding to 1440130455 its reverse (5540310441), we get a palindrome (6980440896).

The spelling of 1440130455 in words is "one billion, four hundred forty million, one hundred thirty thousand, four hundred fifty-five".