422994420 has 48 divisors (see below), whose sum is σ = 1315984320. Its totient is φ = 112798368.

The previous prime is 422994419. The next prime is 422994421. The reversal of 422994420 is 24499224.

422994420 is a `hidden beast` number, since 4 + 229 + 9 + 4 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (422994419) and next prime (422994421).

It is a super-2 number, since 2×422994420² = 357848558702272800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422994421) 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, 391122 + ... + 392201.

It is an arithmetic number, because the mean of its divisors is an integer number (27416340).

Almost surely, 2^422994420 is an apocalyptic number.

It is an amenable number.

422994420 is an abundant number, since it is smaller than the sum of its proper divisors (892989900).

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

422994420 is a wasteful number, since it uses less digits than its factorization.

422994420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783341 (or 783333 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 422994420 is about 20566.8281463137. The cubic root of 422994420 is about 750.6627741347.

The spelling of 422994420 in words is "four hundred twenty-two million, nine hundred ninety-four thousand, four hundred twenty".