142221042252 has 18 divisors (see below), whose sum is σ = 359503190228. Its totient is φ = 47407014072.

The previous prime is 142221042251. The next prime is 142221042253. The reversal of 142221042252 is 252240122241.

142221042252 is a `hidden beast` number, since 1 + 4 + 22 + 210 + 422 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (142221042251) and next prime (142221042253).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (142221042251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1975292218 + ... + 1975292289.

Almost surely, 2^142221042252 is an apocalyptic number.

142221042252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142221042252 is an abundant number, since it is smaller than the sum of its proper divisors (217282147976).

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

142221042252 is a wasteful number, since it uses less digits than its factorization.

142221042252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950584517 (or 3950584512 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 142221042252 its reverse (252240122241), we get a palindrome (394461164493).

The spelling of 142221042252 in words is "one hundred forty-two billion, two hundred twenty-one million, forty-two thousand, two hundred fifty-two".