1042312440 has 128 divisors (see below), whose sum is σ = 3392746560. Its totient is φ = 254644224.

The previous prime is 1042312421. The next prime is 1042312463. The reversal of 1042312440 is 442132401.

1042312440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211282 + ... + 216158.

Almost surely, 2^1042312440 is an apocalyptic number.

1042312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1042312440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696373280).

1042312440 is an abundant number, since it is smaller than the sum of its proper divisors (2350434120).

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

1042312440 is a wasteful number, since it uses less digits than its factorization.

1042312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041 (or 5037 counting only the distinct ones).

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

The square root of 1042312440 is about 32284.8639458183. The cubic root of 1042312440 is about 1013.9097679279.

Adding to 1042312440 its reverse (442132401), we get a palindrome (1484444841).

The spelling of 1042312440 in words is "one billion, forty-two million, three hundred twelve thousand, four hundred forty".