2539040140 has 48 divisors (see below), whose sum is σ = 6562446912. Its totient is φ = 803563776.

The previous prime is 2539040071. The next prime is 2539040177. The reversal of 2539040140 is 410409352.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2539040099 and 2539040108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695719 + ... + 699358.

It is an arithmetic number, because the mean of its divisors is an integer number (136717644).

Almost surely, 2^2539040140 is an apocalyptic number.

2539040140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2539040140 is an abundant number, since it is smaller than the sum of its proper divisors (4023406772).

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

2539040140 is a wasteful number, since it uses less digits than its factorization.

2539040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395106 (or 1395104 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2539040140 is about 50388.8890530442. The cubic root of 2539040140 is about 1364.2370991303.

Adding to 2539040140 its reverse (410409352), we get a palindrome (2949449492).

The spelling of 2539040140 in words is "two billion, five hundred thirty-nine million, forty thousand, one hundred forty".