1240001040 has 40 divisors (see below), whose sum is σ = 3844003968. Its totient is φ = 330666880.

The previous prime is 1240001033. The next prime is 1240001051. The reversal of 1240001040 is 401000421.

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 (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583096 + ... + 2583575.

Almost surely, 2^1240001040 is an apocalyptic number.

1240001040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240001040 is an abundant number, since it is smaller than the sum of its proper divisors (2604002928).

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

1240001040 is a wasteful number, since it uses less digits than its factorization.

1240001040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166687 (or 5166681 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1240001040 is about 35213.6484903226. The cubic root of 1240001040 is about 1074.3373713412.

Adding to 1240001040 its reverse (401000421), we get a palindrome (1641001461).

The spelling of 1240001040 in words is "one billion, two hundred forty million, one thousand, forty".