3420221240 has 32 divisors (see below), whose sum is σ = 7708106880. Its totient is φ = 1365846912.

The previous prime is 3420221239. The next prime is 3420221243. The reversal of 3420221240 is 421220243.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420221243) 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 7 ways as a sum of consecutive naturals, for example, 45224 + ... + 94263.

It is an arithmetic number, because the mean of its divisors is an integer number (240878340).

Almost surely, 2^3420221240 is an apocalyptic number.

It is an amenable number.

3420221240 is an abundant number, since it is smaller than the sum of its proper divisors (4287885640).

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

3420221240 is a wasteful number, since it uses less digits than its factorization.

3420221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140111 (or 140107 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3420221240 is about 58482.6576003519. The cubic root of 3420221240 is about 1506.6697420339.

Adding to 3420221240 its reverse (421220243), we get a palindrome (3841441483).

The spelling of 3420221240 in words is "three billion, four hundred twenty million, two hundred twenty-one thousand, two hundred forty".