142402222 has 4 divisors (see below), whose sum is σ = 213603336. Its totient is φ = 71201110.

The previous prime is 142402219. The next prime is 142402229. The reversal of 142402222 is 222204241.

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

It is a self number, because there is not a number n which added to its sum of digits gives 142402222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142402229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600554 + ... + 35600557.

It is an arithmetic number, because the mean of its divisors is an integer number (53400834).

Almost surely, 2^142402222 is an apocalyptic number.

142402222 is a deficient number, since it is larger than the sum of its proper divisors (71201114).

142402222 is an equidigital number, since it uses as much as digits as its factorization.

142402222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71201113.

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

The square root of 142402222 is about 11933.2402137894. The cubic root of 142402222 is about 522.2024703526.

Adding to 142402222 its reverse (222204241), we get a palindrome (364606463).

The spelling of 142402222 in words is "one hundred forty-two million, four hundred two thousand, two hundred twenty-two".