142220634 has 16 divisors (see below), whose sum is σ = 284643072. Its totient is φ = 47373248.

The previous prime is 142220629. The next prime is 142220713. The reversal of 142220634 is 436022241.

142220634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1687 + ... + 16949.

It is an arithmetic number, because the mean of its divisors is an integer number (17790192).

Almost surely, 2^142220634 is an apocalyptic number.

142220634 is an abundant number, since it is smaller than the sum of its proper divisors (142422438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142220634 is a wasteful number, since it uses less digits than its factorization.

142220634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16821.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 142220634 is about 11925.6292915720. The cubic root of 142220634 is about 521.9804091237.

Adding to 142220634 its reverse (436022241), we get a palindrome (578242875).

The spelling of 142220634 in words is "one hundred forty-two million, two hundred twenty thousand, six hundred thirty-four".