4020020422 has 8 divisors (see below), whose sum is σ = 6578215272. Its totient is φ = 1827282000.

The previous prime is 4020020419. The next prime is 4020020443. The reversal of 4020020422 is 2240200204.

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

It is a junction number, because it is equal to n+sod(n) for n = 4020020396 and 4020020405.

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, 91364079 + ... + 91364122.

It is an arithmetic number, because the mean of its divisors is an integer number (822276909).

Almost surely, 2^4020020422 is an apocalyptic number.

4020020422 is a deficient number, since it is larger than the sum of its proper divisors (2558194850).

4020020422 is a wasteful number, since it uses less digits than its factorization.

4020020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182728214.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4020020422 is about 63403.6309843529. The cubic root of 4020020422 is about 1590.0450156684.

Adding to 4020020422 its reverse (2240200204), we get a palindrome (6260220626).

It can be divided in two parts, 40200204 and 22, that multiplied together give a palindrome (884404488).

The spelling of 4020020422 in words is "four billion, twenty million, twenty thousand, four hundred twenty-two".