422720142 has 32 divisors (see below), whose sum is σ = 913016832. Its totient is φ = 129704544.

The previous prime is 422720131. The next prime is 422720159. The reversal of 422720142 is 241027224.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 21243 + ... + 36009.

It is an arithmetic number, because the mean of its divisors is an integer number (28531776).

Almost surely, 2^422720142 is an apocalyptic number.

422720142 is an abundant number, since it is smaller than the sum of its proper divisors (490296690).

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

422720142 is a wasteful number, since it uses less digits than its factorization.

422720142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 422720142 is about 20560.1590947152. The cubic root of 422720142 is about 750.5004908265.

Adding to 422720142 its reverse (241027224), we get a palindrome (663747366).

The spelling of 422720142 in words is "four hundred twenty-two million, seven hundred twenty thousand, one hundred forty-two".