142402042 has 4 divisors (see below), whose sum is σ = 213603066. Its totient is φ = 71201020.

The previous prime is 142402037. The next prime is 142402079. The reversal of 142402042 is 240204241.

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., 140683321 + 1718721 = 11861^2 + 1311^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600509 + ... + 35600512.

Almost surely, 2^142402042 is an apocalyptic number.

142402042 is a deficient number, since it is larger than the sum of its proper divisors (71201024).

142402042 is an equidigital number, since it uses as much as digits as its factorization.

142402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71201023.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 142402042 is about 11933.2326718287. The cubic root of 142402042 is about 522.2022503269.

Adding to 142402042 its reverse (240204241), we get a palindrome (382606283).

The spelling of 142402042 in words is "one hundred forty-two million, four hundred two thousand, forty-two".