1440042432 has 28 divisors (see below), whose sum is σ = 3810112776. Its totient is φ = 480014080.

The previous prime is 1440042431. The next prime is 1440042469. The reversal of 1440042432 is 2342400441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440042431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749919 + ... + 3750302.

Almost surely, 2^1440042432 is an apocalyptic number.

1440042432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440042432 is an abundant number, since it is smaller than the sum of its proper divisors (2370070344).

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

1440042432 is an equidigital number, since it uses as much as digits as its factorization.

1440042432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500236 (or 7500226 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1440042432 is about 37947.8910085923. The cubic root of 1440042432 is about 1129.2543262263.

Adding to 1440042432 its reverse (2342400441), we get a palindrome (3782442873).

The spelling of 1440042432 in words is "one billion, four hundred forty million, forty-two thousand, four hundred thirty-two".