3420220505 has 16 divisors (see below), whose sum is σ = 4431144144. Its totient is φ = 2519320320.

The previous prime is 3420220477. The next prime is 3420220511. The reversal of 3420220505 is 5050220243.

It can be written as a sum of positive squares in 8 ways, for example, as 1713481 + 3418507024 = 1309^2 + 58468^2 .

It is not a de Polignac number, because 3420220505 - 2¹² = 3420216409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40466 + ... + 92075.

It is an arithmetic number, because the mean of its divisors is an integer number (276946509).

Almost surely, 2^3420220505 is an apocalyptic number.

It is an amenable number.

3420220505 is a deficient number, since it is larger than the sum of its proper divisors (1010923639).

3420220505 is a wasteful number, since it uses less digits than its factorization.

3420220505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132956.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 3420220505 is about 58482.6513164374. The cubic root of 3420220505 is about 1506.6696341069.

Adding to 3420220505 its reverse (5050220243), we get a palindrome (8470440748).

The spelling of 3420220505 in words is "three billion, four hundred twenty million, two hundred twenty thousand, five hundred five".