422021004 has 24 divisors (see below), whose sum is σ = 994870128. Its totient is φ = 139223040.

The previous prime is 422020981. The next prime is 422021023. The reversal of 422021004 is 400120224.

422021004 = 212² + 213² + ... + 1084².

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180117 + ... + 182444.

It is an arithmetic number, because the mean of its divisors is an integer number (41452922).

Almost surely, 2^422021004 is an apocalyptic number.

It is an amenable number.

422021004 is an abundant number, since it is smaller than the sum of its proper divisors (572849124).

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

422021004 is a wasteful number, since it uses less digits than its factorization.

422021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362665 (or 362663 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 422021004 is about 20543.1498071742. The cubic root of 422021004 is about 750.0865109097.

Adding to 422021004 its reverse (400120224), we get a palindrome (822141228).

The spelling of 422021004 in words is "four hundred twenty-two million, twenty-one thousand, four".