1042311240 has 320 divisors, whose sum is σ = 3725948160. Its totient is φ = 260789760.

The previous prime is 1042311187. The next prime is 1042311241. The reversal of 1042311240 is 421132401.

1042311240 is a `hidden beast` number, since 1 + 0 + 423 + 1 + 1 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1042311241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5290822 + ... + 5291018.

It is an arithmetic number, because the mean of its divisors is an integer number (11643588).

Almost surely, 2^1042311240 is an apocalyptic number.

1042311240 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 1042311240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862974080).

1042311240 is an abundant number, since it is smaller than the sum of its proper divisors (2683636920).

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

1042311240 is a wasteful number, since it uses less digits than its factorization.

1042311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1042311240 is about 32284.8453612527. The cubic root of 1042311240 is about 1013.9093788277.

Adding to 1042311240 its reverse (421132401), we get a palindrome (1463443641).

The spelling of 1042311240 in words is "one billion, forty-two million, three hundred eleven thousand, two hundred forty".