1440533142 has 24 divisors (see below), whose sum is σ = 3125917080. Its totient is φ = 479445120.

The previous prime is 1440533137. The next prime is 1440533183. The reversal of 1440533142 is 2413350441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48859 + ... + 72582.

It is an arithmetic number, because the mean of its divisors is an integer number (130246545).

Almost surely, 2^1440533142 is an apocalyptic number.

1440533142 is an abundant number, since it is smaller than the sum of its proper divisors (1685383938).

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

1440533142 is a wasteful number, since it uses less digits than its factorization.

1440533142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122108 (or 122105 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1440533142 is about 37954.3560345845. The cubic root of 1440533142 is about 1129.3825801924.

Adding to 1440533142 its reverse (2413350441), we get a palindrome (3853883583).

The spelling of 1440533142 in words is "one billion, four hundred forty million, five hundred thirty-three thousand, one hundred forty-two".