224021142 has 72 divisors (see below), whose sum is σ = 510292224. Its totient is φ = 70997472.

The previous prime is 224021141. The next prime is 224021177. The reversal of 224021142 is 241120422.

224021142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224021141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1763883 + ... + 1764009.

It is an arithmetic number, because the mean of its divisors is an integer number (7087392).

Almost surely, 2^224021142 is an apocalyptic number.

224021142 is an abundant number, since it is smaller than the sum of its proper divisors (286271082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

224021142 is a wasteful number, since it uses less digits than its factorization.

224021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 224021142 is about 14967.3358350777. The cubic root of 224021142 is about 607.3369007871.

Adding to 224021142 its reverse (241120422), we get a palindrome (465141564).

The spelling of 224021142 in words is "two hundred twenty-four million, twenty-one thousand, one hundred forty-two".