422506100 has 36 divisors (see below), whose sum is σ = 970773804. Its totient is φ = 159060480.

The previous prime is 422506079. The next prime is 422506109. The reversal of 422506100 is 1605224.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 50324836 + 372181264 = 7094^2 + 19292^2 .

It is a super-2 number, since 2×422506100² = 357022809074420000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422506109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122567 + ... + 125966.

It is an arithmetic number, because the mean of its divisors is an integer number (26965939).

Almost surely, 2^422506100 is an apocalyptic number.

It is an amenable number.

422506100 is an abundant number, since it is smaller than the sum of its proper divisors (548267704).

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

422506100 is a wasteful number, since it uses less digits than its factorization.

422506100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248564 (or 248557 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 422506100 is about 20554.9531743568. The cubic root of 422506100 is about 750.3737988535.

The spelling of 422506100 in words is "four hundred twenty-two million, five hundred six thousand, one hundred".