1040140660 has 24 divisors (see below), whose sum is σ = 2352318696. Its totient is φ = 384051840.

The previous prime is 1040140649. The next prime is 1040140663. The reversal of 1040140660 is 660410401.

It can be written as a sum of positive squares in 4 ways, for example, as 138579984 + 901560676 = 11772^2 + 30026^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040140663) 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, 2000011 + ... + 2000530.

It is an arithmetic number, because the mean of its divisors is an integer number (98013279).

Almost surely, 2^1040140660 is an apocalyptic number.

1040140660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040140660 is an abundant number, since it is smaller than the sum of its proper divisors (1312178036).

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

1040140660 is a wasteful number, since it uses less digits than its factorization.

1040140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000563 (or 4000561 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1040140660 is about 32251.2117601804. The cubic root of 1040140660 is about 1013.2050783642.

The spelling of 1040140660 in words is "one billion, forty million, one hundred forty thousand, six hundred sixty".