2140040 has 32 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 733632.

The previous prime is 2140013. The next prime is 2140049. The reversal of 2140040 is 400412.

It is not an unprimeable number, because it can be changed into a prime (2140049) 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, 3542 + ... + 4101.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

2^2140040 is an apocalyptic number.

2140040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140040 is an abundant number, since it is smaller than the sum of its proper divisors (3363640).

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

2140040 is a wasteful number, since it uses less digits than its factorization.

2140040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661 (or 7657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2140040 is about 1462.8875554874. The cubic root of 2140040 is about 128.8666771519.

Adding to 2140040 its reverse (400412), we get a palindrome (2540452).

The spelling of 2140040 in words is "two million, one hundred forty thousand, forty".