1001142564 has 12 divisors (see below), whose sum is σ = 2335999344. Its totient is φ = 333714184.

The previous prime is 1001142557. The next prime is 1001142673. The reversal of 1001142564 is 4652411001.

It is a happy number.

1001142564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41714262 + ... + 41714285.

It is an arithmetic number, because the mean of its divisors is an integer number (194666612).

Almost surely, 2^1001142564 is an apocalyptic number.

It is an amenable number.

1001142564 is an abundant number, since it is smaller than the sum of its proper divisors (1334856780).

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

1001142564 is a wasteful number, since it uses less digits than its factorization.

1001142564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83428554 (or 83428552 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1001142564 is about 31640.8369674381. The cubic root of 1001142564 is about 1000.3807097084.

Adding to 1001142564 its reverse (4652411001), we get a palindrome (5653553565).

The spelling of 1001142564 in words is "one billion, one million, one hundred forty-two thousand, five hundred sixty-four".