220142505 has 32 divisors (see below), whose sum is σ = 384933888. Its totient is φ = 106545600.

The previous prime is 220142471. The next prime is 220142513. The reversal of 220142505 is 505241022.

It is a happy number.

It is not a de Polignac number, because 220142505 - 2⁶ = 220142441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148920 + ... + 150390.

It is an arithmetic number, because the mean of its divisors is an integer number (12029184).

Almost surely, 2^220142505 is an apocalyptic number.

It is an amenable number.

220142505 is a deficient number, since it is larger than the sum of its proper divisors (164791383).

220142505 is a wasteful number, since it uses less digits than its factorization.

220142505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 220142505 is about 14837.2000390909. The cubic root of 220142505 is about 603.8113903514.

Adding to 220142505 its reverse (505241022), we get a palindrome (725383527).

The spelling of 220142505 in words is "two hundred twenty million, one hundred forty-two thousand, five hundred five".