1440031242 has 128 divisors (see below), whose sum is σ = 3454617600. Its totient is φ = 395898624.

The previous prime is 1440031237. The next prime is 1440031247. The reversal of 1440031242 is 2421300441.

It is an interprime number because it is at equal distance from previous prime (1440031237) and next prime (1440031247).

It is not an unprimeable number, because it can be changed into a prime (1440031247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2828884 + ... + 2829392.

It is an arithmetic number, because the mean of its divisors is an integer number (26989200).

Almost surely, 2^1440031242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440031242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727308800).

1440031242 is an abundant number, since it is smaller than the sum of its proper divisors (2014586358).

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

1440031242 is a wasteful number, since it uses less digits than its factorization.

1440031242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1440031242 is about 37947.7435692822. The cubic root of 1440031242 is about 1129.2514012225.

Adding to 1440031242 its reverse (2421300441), we get a palindrome (3861331683).

The spelling of 1440031242 in words is "one billion, four hundred forty million, thirty-one thousand, two hundred forty-two".