2421240666 has 16 divisors (see below), whose sum is σ = 5214980064. Its totient is φ = 744997104.

The previous prime is 2421240637. The next prime is 2421240667. The reversal of 2421240666 is 6660421242.

It is not an unprimeable number, because it can be changed into a prime (2421240667) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15520696 + ... + 15520851.

It is an arithmetic number, because the mean of its divisors is an integer number (325936254).

Almost surely, 2^2421240666 is an apocalyptic number.

2421240666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2421240666 is an abundant number, since it is smaller than the sum of its proper divisors (2793739398).

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

2421240666 is a wasteful number, since it uses less digits than its factorization.

2421240666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31041565.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 2421240666 is about 49206.1039506279. The cubic root of 2421240666 is about 1342.8040831597.

The spelling of 2421240666 in words is "two billion, four hundred twenty-one million, two hundred forty thousand, six hundred sixty-six".