222142146 has 16 divisors (see below), whose sum is σ = 459604800. Its totient is φ = 71493968.

The previous prime is 222142121. The next prime is 222142147. The reversal of 222142146 is 641241222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222142147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638166 + ... + 638513.

It is an arithmetic number, because the mean of its divisors is an integer number (28725300).

Almost surely, 2^222142146 is an apocalyptic number.

222142146 is an abundant number, since it is smaller than the sum of its proper divisors (237462654).

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

222142146 is a wasteful number, since it uses less digits than its factorization.

222142146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276713.

The product of its digits is 1536, while the sum is 24.

The square root of 222142146 is about 14904.4337698552. The cubic root of 222142146 is about 605.6341014606.

Adding to 222142146 its reverse (641241222), we get a palindrome (863383368).

The spelling of 222142146 in words is "two hundred twenty-two million, one hundred forty-two thousand, one hundred forty-six".