8120422 has 4 divisors (see below), whose sum is σ = 12180636. Its totient is φ = 4060210.

The previous prime is 8120393. The next prime is 8120459. The reversal of 8120422 is 2240218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2240218 = 2 ⋅1120109.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8120422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030104 + ... + 2030107.

It is an arithmetic number, because the mean of its divisors is an integer number (3045159).

Almost surely, 2^8120422 is an apocalyptic number.

8120422 is a deficient number, since it is larger than the sum of its proper divisors (4060214).

8120422 is a wasteful number, since it uses less digits than its factorization.

8120422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060213.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 8120422 is about 2849.6354152768. The cubic root of 8120422 is about 200.9985231280.

It can be divided in two parts, 81 and 20422, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 8120422 in words is "eight million, one hundred twenty thousand, four hundred twenty-two".