422129798 has 4 divisors (see below), whose sum is σ = 633194700. Its totient is φ = 211064898.

The previous prime is 422129797. The next prime is 422129801. The reversal of 422129798 is 897921224.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422129797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105532448 + ... + 105532451.

It is an arithmetic number, because the mean of its divisors is an integer number (158298675).

Almost surely, 2^422129798 is an apocalyptic number.

422129798 is a deficient number, since it is larger than the sum of its proper divisors (211064902).

422129798 is a wasteful number, since it uses less digits than its factorization.

422129798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211064901.

The product of its digits is 145152, while the sum is 44.

The square root of 422129798 is about 20545.7975751734. The cubic root of 422129798 is about 750.1509610197.

The spelling of 422129798 in words is "four hundred twenty-two million, one hundred twenty-nine thousand, seven hundred ninety-eight".