142220234 has 16 divisors (see below), whose sum is σ = 237663720. Its totient is φ = 63376320.

The previous prime is 142220231. The next prime is 142220311. The reversal of 142220234 is 432022241.

142220234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 127803025 + 14417209 = 11305^2 + 3797^2 .

It is not an unprimeable number, because it can be changed into a prime (142220231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93557 + ... + 95064.

Almost surely, 2^142220234 is an apocalyptic number.

142220234 is a deficient number, since it is larger than the sum of its proper divisors (95443486).

142220234 is a wasteful number, since it uses less digits than its factorization.

142220234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188665.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142220234 is about 11925.6125209567. The cubic root of 142220234 is about 521.9799197611.

Adding to 142220234 its reverse (432022241), we get a palindrome (574242475).

The spelling of 142220234 in words is "one hundred forty-two million, two hundred twenty thousand, two hundred thirty-four".