2640415242 has 8 divisors (see below), whose sum is σ = 5280830496. Its totient is φ = 880138412.

The previous prime is 2640415213. The next prime is 2640415273. The reversal of 2640415242 is 2425140462.

It is a sphenic number, since it is the product of 3 distinct primes.

2640415242 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220034598 + ... + 220034609.

It is an arithmetic number, because the mean of its divisors is an integer number (660103812).

Almost surely, 2^2640415242 is an apocalyptic number.

2640415242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640415242 is a wasteful number, since it uses less digits than its factorization.

2640415242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440069212.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 2640415242 is about 51384.9709740115. The cubic root of 2640415242 is about 1382.1571042732.

The spelling of 2640415242 in words is "two billion, six hundred forty million, four hundred fifteen thousand, two hundred forty-two".