142250242 has 4 divisors (see below), whose sum is σ = 213375366. Its totient is φ = 71125120.

The previous prime is 142250219. The next prime is 142250243. The reversal of 142250242 is 242052241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 101787921 + 40462321 = 10089^2 + 6361^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142250243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35562559 + ... + 35562562.

Almost surely, 2^142250242 is an apocalyptic number.

142250242 is a deficient number, since it is larger than the sum of its proper divisors (71125124).

142250242 is an equidigital number, since it uses as much as digits as its factorization.

142250242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71125123.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 142250242 is about 11926.8705870400. The cubic root of 142250242 is about 522.0166291928.

The spelling of 142250242 in words is "one hundred forty-two million, two hundred fifty thousand, two hundred forty-two".