422120143 has 16 divisors (see below), whose sum is σ = 447534720. Its totient is φ = 397522944.

The previous prime is 422120141. The next prime is 422120159. The reversal of 422120143 is 341021224.

It is a cyclic number.

It is not a de Polignac number, because 422120143 - 2¹ = 422120141 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 422120143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422120141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295930 + ... + 297352.

It is an arithmetic number, because the mean of its divisors is an integer number (27970920).

Almost surely, 2^422120143 is an apocalyptic number.

422120143 is a deficient number, since it is larger than the sum of its proper divisors (25414577).

422120143 is a wasteful number, since it uses less digits than its factorization.

422120143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 422120143 is about 20545.5626109386. The cubic root of 422120143 is about 750.1452417972.

Adding to 422120143 its reverse (341021224), we get a palindrome (763141367).

The spelling of 422120143 in words is "four hundred twenty-two million, one hundred twenty thousand, one hundred forty-three".