2002421740 has 36 divisors (see below), whose sum is σ = 4622124528. Its totient is φ = 728152480.

The previous prime is 2002421717. The next prime is 2002421741. The reversal of 2002421740 is 471242002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2002421741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411304 + ... + 416143.

It is an arithmetic number, because the mean of its divisors is an integer number (128392348).

Almost surely, 2^2002421740 is an apocalyptic number.

2002421740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002421740 is an abundant number, since it is smaller than the sum of its proper divisors (2619702788).

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

2002421740 is a wasteful number, since it uses less digits than its factorization.

2002421740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827478 (or 827465 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 2002421740 is about 44748.4272349320. The cubic root of 2002421740 is about 1260.4293783107.

Adding to 2002421740 its reverse (471242002), we get a palindrome (2473663742).

The spelling of 2002421740 in words is "two billion, two million, four hundred twenty-one thousand, seven hundred forty".