220123142 has 4 divisors (see below), whose sum is σ = 330184716. Its totient is φ = 110061570.

The previous prime is 220123139. The next prime is 220123147. The reversal of 220123142 is 241321022.

220123142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241321022 = 2 ⋅120660511.

It is a self number, because there is not a number n which added to its sum of digits gives 220123142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55030784 + ... + 55030787.

It is an arithmetic number, because the mean of its divisors is an integer number (82546179).

Almost surely, 2^220123142 is an apocalyptic number.

220123142 is a deficient number, since it is larger than the sum of its proper divisors (110061574).

220123142 is a wasteful number, since it uses less digits than its factorization.

220123142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110061573.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220123142 is about 14836.5475094444. The cubic root of 220123142 is about 603.7936867542.

Adding to 220123142 its reverse (241321022), we get a palindrome (461444164).

The spelling of 220123142 in words is "two hundred twenty million, one hundred twenty-three thousand, one hundred forty-two".