142212242 has 16 divisors (see below), whose sum is σ = 228108312. Its totient is φ = 66259200.

The previous prime is 142212233. The next prime is 142212247. The reversal of 142212242 is 242212241.

It can be written as a sum of positive squares in 4 ways, for example, as 136165561 + 6046681 = 11669^2 + 2459^2 .

It is not an unprimeable number, because it can be changed into a prime (142212247) 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, 17273 + ... + 24140.

Almost surely, 2^142212242 is an apocalyptic number.

142212242 is a deficient number, since it is larger than the sum of its proper divisors (85896070).

142212242 is a wasteful number, since it uses less digits than its factorization.

142212242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41533.

The product of its digits is 512, while the sum is 20.

The square root of 142212242 is about 11925.2774391207. The cubic root of 142212242 is about 521.9701421049.

Adding to 142212242 its reverse (242212241), we get a palindrome (384424483).

Subtracting 142212242 from its reverse (242212241), we obtain a palindrome (99999999).

The spelling of 142212242 in words is "one hundred forty-two million, two hundred twelve thousand, two hundred forty-two".