1000001040 has 40 divisors (see below), whose sum is σ = 3100003968. Its totient is φ = 266666880.

The previous prime is 1000001021. The next prime is 1000001053. The reversal of 1000001040 is 401000001.

1000001040 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 (40).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 2083096 + ... + 2083575.

Almost surely, 2^1000001040 is an apocalyptic number.

1000001040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000001040 is an abundant number, since it is smaller than the sum of its proper divisors (2100002928).

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

1000001040 is a wasteful number, since it uses less digits than its factorization.

1000001040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166687 (or 4166681 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1000001040 is about 31622.7930455234. The cubic root of 1000001040 is about 1000.0003466665. Note that the first 3 decimals are identical.

Adding to 1000001040 its reverse (401000001), we get a palindrome (1401001041).

The spelling of 1000001040 in words is "one billion, one thousand, forty".