220142506 has 16 divisors (see below), whose sum is σ = 335197440. Its totient is φ = 108416880.

The previous prime is 220142471. The next prime is 220142513. The reversal of 220142506 is 605241022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75516 + ... + 78376.

It is an arithmetic number, because the mean of its divisors is an integer number (20949840).

Almost surely, 2^220142506 is an apocalyptic number.

220142506 is a deficient number, since it is larger than the sum of its proper divisors (115054934).

220142506 is a wasteful number, since it uses less digits than its factorization.

220142506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 220142506 is about 14837.2000727900. The cubic root of 220142506 is about 603.8113912657.

Adding to 220142506 its reverse (605241022), we get a palindrome (825383528).

The spelling of 220142506 in words is "two hundred twenty million, one hundred forty-two thousand, five hundred six".