2139458240 has 28 divisors (see below), whose sum is σ = 5094585696. Its totient is φ = 855783168.

The previous prime is 2139458239. The next prime is 2139458263. The reversal of 2139458240 is 428549312.

2139458240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2139458194 and 2139458203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3342584 + ... + 3343223.

Almost surely, 2^2139458240 is an apocalyptic number.

2139458240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139458240 is an abundant number, since it is smaller than the sum of its proper divisors (2955127456).

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

2139458240 is an equidigital number, since it uses as much as digits as its factorization.

2139458240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685824 (or 6685814 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2139458240 is about 46254.2780724119. The cubic root of 2139458240 is about 1288.5499882302.

The spelling of 2139458240 in words is "two billion, one hundred thirty-nine million, four hundred fifty-eight thousand, two hundred forty".