1142255040 has 112 divisors (see below), whose sum is σ = 3634630272. Its totient is φ = 303932416.

The previous prime is 1142255033. The next prime is 1142255057. The reversal of 1142255040 is 405522411.

1142255040 is nontrivially palindromic in base 14.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1142255040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562507 + ... + 564533.

It is an arithmetic number, because the mean of its divisors is an integer number (32452056).

Almost surely, 2^1142255040 is an apocalyptic number.

1142255040 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 1142255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817315136).

1142255040 is an abundant number, since it is smaller than the sum of its proper divisors (2492375232).

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

1142255040 is a wasteful number, since it uses less digits than its factorization.

1142255040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1142255040 is about 33797.2637945737. The cubic root of 1142255040 is about 1045.3322783610.

Adding to 1142255040 its reverse (405522411), we get a palindrome (1547777451).

The spelling of 1142255040 in words is "one billion, one hundred forty-two million, two hundred fifty-five thousand, forty".