42200100 has 54 divisors (see below), whose sum is σ = 132276690. Its totient is φ = 11253120.

The previous prime is 42200087. The next prime is 42200107. The reversal of 42200100 is 100224.

It can be written as a sum of positive squares in 3 ways, for example, as 2585664 + 39614436 = 1608^2 + 6294^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (42200107) 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 in 17 ways as a sum of consecutive naturals, for example, 22545 + ... + 24344.

Almost surely, 2^42200100 is an apocalyptic number.

It is an amenable number.

42200100 is an abundant number, since it is smaller than the sum of its proper divisors (90076590).

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

42200100 is a wasteful number, since it uses less digits than its factorization.

42200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46909 (or 46899 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 42200100 is about 6496.1604044235. The cubic root of 42200100 is about 348.1538162678.

Adding to 42200100 its reverse (100224), we get a palindrome (42300324).

The spelling of 42200100 in words is "forty-two million, two hundred thousand, one hundred".