1142340320 has 96 divisors (see below), whose sum is σ = 2955004416. Its totient is φ = 413862400.

The previous prime is 1142340307. The next prime is 1142340337. The reversal of 1142340320 is 230432411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1142340292 and 1142340301.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 546317 + ... + 548403.

It is an arithmetic number, because the mean of its divisors is an integer number (30781296).

Almost surely, 2^1142340320 is an apocalyptic number.

1142340320 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 1142340320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477502208).

1142340320 is an abundant number, since it is smaller than the sum of its proper divisors (1812664096).

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

1142340320 is a wasteful number, since it uses less digits than its factorization.

1142340320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2416 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1142340320 is about 33798.5254116211. The cubic root of 1142340320 is about 1045.3582923173.

Adding to 1142340320 its reverse (230432411), we get a palindrome (1372772731).

The spelling of 1142340320 in words is "one billion, one hundred forty-two million, three hundred forty thousand, three hundred twenty".