220144142 has 4 divisors (see below), whose sum is σ = 330216216. Its totient is φ = 110072070.

The previous prime is 220144121. The next prime is 220144153. The reversal of 220144142 is 241441022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241441022 = 2 ⋅120720511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55036034 + ... + 55036037.

It is an arithmetic number, because the mean of its divisors is an integer number (82554054).

Almost surely, 2^220144142 is an apocalyptic number.

220144142 is a deficient number, since it is larger than the sum of its proper divisors (110072074).

220144142 is a wasteful number, since it uses less digits than its factorization.

220144142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110072073.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 220144142 is about 14837.2552043833. The cubic root of 220144142 is about 603.8128870135.

Adding to 220144142 its reverse (241441022), we get a palindrome (461585164).

The spelling of 220144142 in words is "two hundred twenty million, one hundred forty-four thousand, one hundred forty-two".