3421240240 has 80 divisors (see below), whose sum is σ = 8705933856. Its totient is φ = 1240012800.

The previous prime is 3421240219. The next prime is 3421240241. The reversal of 3421240240 is 420421243.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 (3421240241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269230 + ... + 281650.

Almost surely, 2^3421240240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3421240240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4352966928).

3421240240 is an abundant number, since it is smaller than the sum of its proper divisors (5284693616).

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

3421240240 is a wasteful number, since it uses less digits than its factorization.

3421240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12758 (or 12752 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 3421240240 is about 58491.3689359379. The cubic root of 3421240240 is about 1506.8193565288.

Adding to 3421240240 its reverse (420421243), we get a palindrome (3841661483).

The spelling of 3421240240 in words is "three billion, four hundred twenty-one million, two hundred forty thousand, two hundred forty".