1001345240 has 32 divisors (see below), whose sum is σ = 2574888480. Its totient is φ = 343318272.

The previous prime is 1001345207. The next prime is 1001345243. The reversal of 1001345240 is 425431001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001345243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787837 + ... + 1788396.

It is an arithmetic number, because the mean of its divisors is an integer number (80465265).

Almost surely, 2^1001345240 is an apocalyptic number.

1001345240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001345240 is an abundant number, since it is smaller than the sum of its proper divisors (1573543240).

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

1001345240 is a wasteful number, since it uses less digits than its factorization.

1001345240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576251 (or 3576247 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1001345240 is about 31644.0395651377. The cubic root of 1001345240 is about 1000.4482124090.

Adding to 1001345240 its reverse (425431001), we get a palindrome (1426776241).

The spelling of 1001345240 in words is "one billion, one million, three hundred forty-five thousand, two hundred forty".