142122244 has 72 divisors (see below), whose sum is σ = 302448384. Its totient is φ = 58080000.

The previous prime is 142122187. The next prime is 142122269. The reversal of 142122244 is 442221241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188869 + ... + 189619.

It is an arithmetic number, because the mean of its divisors is an integer number (4200672).

Almost surely, 2^142122244 is an apocalyptic number.

It is an amenable number.

142122244 is an abundant number, since it is smaller than the sum of its proper divisors (160326140).

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

142122244 is a wasteful number, since it uses less digits than its factorization.

142122244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 804 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 142122244 is about 11921.5034286788. The cubic root of 142122244 is about 521.8600105129.

Adding to 142122244 its reverse (442221241), we get a palindrome (584343485).

The spelling of 142122244 in words is "one hundred forty-two million, one hundred twenty-two thousand, two hundred forty-four".