1145342440 has 48 divisors (see below), whose sum is σ = 2832604740. Its totient is φ = 416486400.

The previous prime is 1145342413. The next prime is 1145342441. The reversal of 1145342440 is 442435411.

It can be written as a sum of positive squares in 2 ways, for example, as 1116762724 + 28579716 = 33418^2 + 5346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1145342399 and 1145342408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145342441) 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 11 ways as a sum of consecutive naturals, for example, 113481 + ... + 123160.

Almost surely, 2^1145342440 is an apocalyptic number.

1145342440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145342440 is an abundant number, since it is smaller than the sum of its proper divisors (1687262300).

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

1145342440 is a wasteful number, since it uses less digits than its factorization.

1145342440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236674 (or 236659 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1145342440 is about 33842.9082674642. The cubic root of 1145342440 is about 1046.2732402828.

Adding to 1145342440 its reverse (442435411), we get a palindrome (1587777851).

The spelling of 1145342440 in words is "one billion, one hundred forty-five million, three hundred forty-two thousand, four hundred forty".