1001265340 has 24 divisors (see below), whose sum is σ = 2122312752. Its totient is φ = 396762240.

The previous prime is 1001265323. The next prime is 1001265361. The reversal of 1001265340 is 435621001.

It is a congruent number.

It is an unprimeable number.

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, 231801 + ... + 236080.

It is an arithmetic number, because the mean of its divisors is an integer number (88429698).

Almost surely, 2^1001265340 is an apocalyptic number.

1001265340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001265340 is an abundant number, since it is smaller than the sum of its proper divisors (1121047412).

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

1001265340 is a wasteful number, since it uses less digits than its factorization.

1001265340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467997 (or 467995 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1001265340 is about 31642.7770589119. Note that the first 3 decimals coincide. The cubic root of 1001265340 is about 1000.4216022266.

Adding to 1001265340 its reverse (435621001), we get a palindrome (1436886341).

The spelling of 1001265340 in words is "one billion, one million, two hundred sixty-five thousand, three hundred forty".