4020422 has 8 divisors (see below), whose sum is σ = 6892176. Its totient is φ = 1723032.

The previous prime is 4020409. The next prime is 4020431. The reversal of 4020422 is 2240204.

It is a happy number.

4020422 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 287173 = 4020422 / (4 + 0 + 2 + 0 + 4 + 2 + 2).

4020422 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 4020397 and 4020406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143573 + ... + 143600.

It is an arithmetic number, because the mean of its divisors is an integer number (861522).

Almost surely, 2^4020422 is an apocalyptic number.

4020422 is a deficient number, since it is larger than the sum of its proper divisors (2871754).

4020422 is a wasteful number, since it uses less digits than its factorization.

4020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287182.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4020422 is about 2005.0990000496. The cubic root of 4020422 is about 159.0097959499.

Adding to 4020422 its reverse (2240204), we get a palindrome (6260626).

It can be divided in two parts, 40204 and 22, that multiplied together give a palindrome (884488).

The spelling of 4020422 in words is "four million, twenty thousand, four hundred twenty-two".