142204142 has 4 divisors (see below), whose sum is σ = 213306216. Its totient is φ = 71102070.

The previous prime is 142204129. The next prime is 142204157. The reversal of 142204142 is 241402241.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35551034 + ... + 35551037.

It is an arithmetic number, because the mean of its divisors is an integer number (53326554).

Almost surely, 2^142204142 is an apocalyptic number.

142204142 is a deficient number, since it is larger than the sum of its proper divisors (71102074).

142204142 is an equidigital number, since it uses as much as digits as its factorization.

142204142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71102073.

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

The square root of 142204142 is about 11924.9378195444. The cubic root of 142204142 is about 521.9602319444.

Adding to 142204142 its reverse (241402241), we get a palindrome (383606383).

The spelling of 142204142 in words is "one hundred forty-two million, two hundred four thousand, one hundred forty-two".