422420004 has 18 divisors (see below), whose sum is σ = 1067783990. Its totient is φ = 140806656.

The previous prime is 422419997. The next prime is 422420021. The reversal of 422420004 is 400024224.

It can be written as a sum of positive squares in only one way, i.e., 416160000 + 6260004 = 20400^2 + 2502^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5866909 + ... + 5866980.

Almost surely, 2^422420004 is an apocalyptic number.

It is an amenable number.

422420004 is an abundant number, since it is smaller than the sum of its proper divisors (645363986).

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

422420004 is a wasteful number, since it uses less digits than its factorization.

422420004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11733899 (or 11733894 counting only the distinct ones).

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

The square root of 422420004 is about 20552.8587792550. The cubic root of 422420004 is about 750.3228263576.

Adding to 422420004 its reverse (400024224), we get a palindrome (822444228).

The spelling of 422420004 in words is "four hundred twenty-two million, four hundred twenty thousand, four".