422022420 has 48 divisors (see below), whose sum is σ = 1312960320. Its totient is φ = 112539168.

The previous prime is 422022409. The next prime is 422022431. The reversal of 422022420 is 24220224.

422022420 is a `hidden beast` number, since 4 + 220 + 22 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (422022409) and next prime (422022431).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 422022393 and 422022402.

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, 390222 + ... + 391301.

It is an arithmetic number, because the mean of its divisors is an integer number (27353340).

Almost surely, 2^422022420 is an apocalyptic number.

It is an amenable number.

422022420 is an abundant number, since it is smaller than the sum of its proper divisors (890937900).

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

422022420 is a wasteful number, since it uses less digits than its factorization.

422022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781541 (or 781533 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 422022420 is about 20543.1842711883. The cubic root of 422022420 is about 750.0873498263.

Adding to 422022420 its reverse (24220224), we get a palindrome (446242644).

The spelling of 422022420 in words is "four hundred twenty-two million, twenty-two thousand, four hundred twenty".