142120442 has 16 divisors (see below), whose sum is σ = 226310760. Its totient is φ = 66705408.

The previous prime is 142120421. The next prime is 142120457. The reversal of 142120442 is 244021241.

It can be written as a sum of positive squares in 4 ways, for example, as 142110241 + 10201 = 11921^2 + 101^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8234 + ... + 18762.

Almost surely, 2^142120442 is an apocalyptic number.

142120442 is a deficient number, since it is larger than the sum of its proper divisors (84190318).

142120442 is a wasteful number, since it uses less digits than its factorization.

142120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10945.

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

The square root of 142120442 is about 11921.4278507233. The cubic root of 142120442 is about 521.8578049099.

Adding to 142120442 its reverse (244021241), we get a palindrome (386141683).

The spelling of 142120442 in words is "one hundred forty-two million, one hundred twenty thousand, four hundred forty-two".