1001032140 has 24 divisors (see below), whose sum is σ = 2802890160. Its totient is φ = 266941888.

The previous prime is 1001032139. The next prime is 1001032169. The reversal of 1001032140 is 412301001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8341875 + ... + 8341994.

It is an arithmetic number, because the mean of its divisors is an integer number (116787090).

Almost surely, 2^1001032140 is an apocalyptic number.

1001032140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001032140 is an abundant number, since it is smaller than the sum of its proper divisors (1801858020).

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

1001032140 is a wasteful number, since it uses less digits than its factorization.

1001032140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16683881 (or 16683879 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1001032140 is about 31639.0919591571. The cubic root of 1001032140 is about 1000.3439283664.

Adding to 1001032140 its reverse (412301001), we get a palindrome (1413333141).

The spelling of 1001032140 in words is "one billion, one million, thirty-two thousand, one hundred forty".