1001043140 has 24 divisors (see below), whose sum is σ = 2159008152. Its totient is φ = 389594880.

The previous prime is 1001043133. The next prime is 1001043143. The reversal of 1001043140 is 413401001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 273770116 + 727273024 = 16546^2 + 26968^2 .

It is not an unprimeable number, because it can be changed into a prime (1001043143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675641 + ... + 677120.

It is an arithmetic number, because the mean of its divisors is an integer number (89958673).

Almost surely, 2^1001043140 is an apocalyptic number.

1001043140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001043140 is an abundant number, since it is smaller than the sum of its proper divisors (1157965012).

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

1001043140 is a wasteful number, since it uses less digits than its factorization.

1001043140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352807 (or 1352805 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1001043140 is about 31639.2657942627. The cubic root of 1001043140 is about 1000.3475924988.

Adding to 1001043140 its reverse (413401001), we get a palindrome (1414444141).

The spelling of 1001043140 in words is "one billion, one million, forty-three thousand, one hundred forty".