142220435 has 8 divisors (see below), whose sum is σ = 195045216. Its totient is φ = 97522560.

The previous prime is 142220413. The next prime is 142220447. The reversal of 142220435 is 534022241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142220435 - 2⁶ = 142220371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142220435.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031686 + ... + 2031755.

It is an arithmetic number, because the mean of its divisors is an integer number (24380652).

Almost surely, 2^142220435 is an apocalyptic number.

142220435 is a deficient number, since it is larger than the sum of its proper divisors (52824781).

142220435 is an equidigital number, since it uses as much as digits as its factorization.

142220435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063453.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142220435 is about 11925.6209481939. The cubic root of 142220435 is about 521.9801656659.

Adding to 142220435 its reverse (534022241), we get a palindrome (676242676).

The spelling of 142220435 in words is "one hundred forty-two million, two hundred twenty thousand, four hundred thirty-five".