142022244 has 48 divisors (see below), whose sum is σ = 407861888. Its totient is φ = 37456128.

The previous prime is 142022239. The next prime is 142022269. The reversal of 142022244 is 442220241.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 142022244.

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 in 15 ways as a sum of consecutive naturals, for example, 63937 + ... + 66120.

Almost surely, 2^142022244 is an apocalyptic number.

142022244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

142022244 is an abundant number, since it is smaller than the sum of its proper divisors (265839644).

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

142022244 is a wasteful number, since it uses less digits than its factorization.

142022244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130084 (or 130082 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142022244 is about 11917.3085887712. The cubic root of 142022244 is about 521.7375848131.

Adding to 142022244 its reverse (442220241), we get a palindrome (584242485).

The spelling of 142022244 in words is "one hundred forty-two million, twenty-two thousand, two hundred forty-four".