2642340340 has 24 divisors (see below), whose sum is σ = 5575221792. Its totient is φ = 1051925280.

The previous prime is 2642340319. The next prime is 2642340343. The reversal of 2642340340 is 430432462.

It is a junction number, because it is equal to n+sod(n) for n = 2642340299 and 2642340308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642340343) 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, 308854 + ... + 317293.

It is an arithmetic number, because the mean of its divisors is an integer number (232300908).

Almost surely, 2^2642340340 is an apocalyptic number.

2642340340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2642340340 is an abundant number, since it is smaller than the sum of its proper divisors (2932881452).

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

2642340340 is a wasteful number, since it uses less digits than its factorization.

2642340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626367 (or 626365 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 2642340340 is about 51403.6996722999. The cubic root of 2642340340 is about 1382.4929279025.

The spelling of 2642340340 in words is "two billion, six hundred forty-two million, three hundred forty thousand, three hundred forty".